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Wetsuit 101 for Scuba Divers: How to Choose the Right Material and Thickness

by Max
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Wetsuit 101 for Scuba Divers - Choosing Right Material & Thickness

Scuba diving is a fun, thrilling, and daring approach to exploring the undersea world. However, the equipment you choose might significantly impact your experience, especially when choosing the right wetsuit. You can maximize your underwater explorations by staying warm, cozy, and comfortable in a well-fitting wetsuit that suits your individual diving needs. You can also make it terrible and uncomfortable by wearing the wrong wetsuit.

The type of neoprene, lining material, stitching, panel design, flexibility, semi-dry wetsuits, zipper types, external layer, wetsuit types, wetsuit thickness, and other crucial variables you need to know about wetsuits will all be covered in this blog post. First, what are the two most important things to consider when going for a scuba diving wetsuit?

If you are more into freediving, make sure to also check out our guide on freediving wetsuits.

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The Two Most Important Considerations When Choosing a Scuba Diving Wetsuit

The two most important considerations when choosing a scuba diving wetsuit are fitness and comfort. However, you should concentrate on the following to make sure you get both in a wetsuit:

1. Fit

A correctly fitting wetsuit material should allow for the complete range of motion during your dive while remaining snug but not constrictive. Too-tight wetsuits can be uncomfortable, impair movement, and be challenging to put on and take off.

On the other hand, an excessively loose wetsuit can enable water to seep in, decreasing insulation and making you cold. Therefore, to identify the ideal fit, you should:

  • Go to a nearby dive shop and ask an experienced instructor (not just a salesperson) for advice on how to select the appropriate size and style based on your body dimensions and diving requirements.
  • Try on a variety of brands and sizes because the fitness and comfort of different wetsuits might vary.
  • Check the wetsuit’s fitness by bending your knees, raising your arms, and making other motions to ensure it doesn’t limit your range of motion.
  • Keep in mind that a brand-new wetsuit may seem a little tight and stiff at first, but after your first dive or a few usages, it will relax and conform better to your body shape.

2. Comfort

To better understand this, you’ll need to take into account the following elements to guarantee a comfortable diving experience.

  • Material: Opt for a wetsuit material made of flexible and soft neoprene, like gas injection neoprene, for increased comfort and mobility.
  • Lining: Choose a wetsuit with cozy, heat-enhancing lining material, such as one with OMNIRED Technology or other thermal linings.
  • Stitching: Are you looking for wetsuits with flat, smooth seams that won’t rub or chafe when you’re diving? Better comfort and water resistance may come from welded seams or glued and blind-stitched seams.
  • Zipper Type and Location: Choose a wetsuit with a zipper that is simple to operate and placed in a convenient area, such as a front zip for simpler entry and exit or a rear zip with a long leash for quick access.

Additionally, you can have a more pleasurable and secure diving experience by paying attention to the fitness and comfort of your scuba diving wetsuit and obtaining professional assistance at a dive facility. Keep in mind that a new wetsuit material could seem tighter and stiffer at first, but it will loosen up after a few dives.

Types of Neoprene for Scuba Diving Wetsuits

Wetsuits are mostly made of neoprene, which comes in two basic varieties: chemical and gas injection neoprene.

1. Chemical Neoprene

The chemical neoprene is produced by combining rubber with different chemicals to create a foam that offers insulation and buoyancy. Chemical neoprene is typically less expensive but might not perform as well as gas injection neoprene. After just a few deep dives, many of the less expensive chemical neoprenes lose much of their thickness.

2. Gas Injection Neoprene

Adding nitrogen gas to the rubber mixture during manufacturing produces a lighter, more flexible, and warmer substance.

Gas injection neoprene is more expensive and frequently seen in higher-end wetsuits but can greatly improve your scuba diving experience.

Cross-Checking Your Budget

One thing to consider before buying your next scuba diving wetsuit is checking how often you dive. Your diving frequency and your wetsuit’s performance need to be considered when choosing the right neoprene. However, it can be worthwhile to purchase a gas-injection neoprene wetsuit if you dive frequently or in cooler seas.

Meanwhile, you can use the following methods to determine whether a wetsuit is constructed of chemical or gas injection neoprene:

The Product Description

The neoprene type may be mentioned specifically in the product description or specs provided by the manufacturer or seller, or they may use terminology like “closed-cell neoprene” or “microcell neoprene,” which typically refers to gas injection neoprene.

Analyze How the Material Feels and Looks

Chemical neoprene typically feels heavier and less flexible than gas injection neoprene and may appear more uniformly colored.

If you’re uncertain about the kind of neoprene used in a specific wetsuit, get in touch with the store or manufacturer for clarification.

Lining Material for Scuba Diving Suits

The lining material of a wetsuit improves comfort, warmth, and flexibility. Polyester and nylon, which are common lining fabrics, are lightweight and quick to dry. New technologies like OMNIRED have been launched to aid in enhancing wetsuit performance.

OMNIRED Technology is a revolutionary lining material that uses infrared to reflect body heat toward the wearer, bringing warmth and better blood circulation. OMNIRED Technology wetsuits may cost more, but they can have several advantages, especially for divers who routinely explore cooler waters.

The Outer Layer of a Wetsuit

The performance, durability, and hydrodynamics of a scuba diving wetsuit can be affected by its outer layer. The exterior layer has two primary choices:

1. Smooth Skin

This rubbery, smooth substance has excellent hydrodynamics and lowers drag in the water. High-end wetsuits frequently use smooth skin; this material may be more vulnerable to abrasions and punctures.

2. Nylon or Other Fabric

While an external layer made of nylon or other fabric offers more toughness and damage resistance, it might not be as hydrodynamic as smooth skin. Also, when choosing an outer layer for your wetsuit, take into account the diving environment, the significance of hydrodynamics, and the relevance of durability.

Types of Wetsuit Stitching

A wetsuit’s strength, flexibility, and water resistance will all depend on the kind of stitching employed. There are four primary stitching styles to take into account:

1. Flatlock Stitching

Using this technique, two panels of fabric are layered and stitched together to form a flat seam. Warmer water temperatures are acceptable for flatlock stitching, which allows some water to leak through the seams.

2. Blind Stitching

Blind stitching is the process of sewing two panels together without cutting through the neoprene’s outer layer after adhering their edges together with glue. This technique makes a waterproof seam perfect for cold water diving.

3. Glued and Blind Stitching (GBS)

GBS delivers an even more impermeable seam and great thermal insulation by combining the advantages of both blind stitching and glue.

4. Liquid-Sealed Stitching

This technique includes coating the seams with a flexible and watertight liquid rubber or urethane layer. High-end wetsuits have liquid-sealed stitching, which provides the best resistance to water penetration. You should consider the water’s temperature and your preferred level of flexibility and durability when selecting the ideal stitching method for your wetsuit.

What About the Number of Panels in a Wetsuit?

The number of panels in a wetsuit refers to the number of separate neoprene sections stitched together to produce the finished item. Panel design can significantly influence the fit, flexibility, and overall performance of a wetsuit.

Because there are fewer seams to hinder movement, wetsuits with fewer panels frequently offer a better fit and more flexibility. However, colder water temperatures may result in more water entering through the seams, which is a problem.

Wetsuits with additional panels can provide a more personalized fit, but the added seams may limit flexibility. Because tension is spread more evenly across the seams, a wetsuit with more panels may also be more durable.

However, consider the scuba diving conditions and your preferences for fit and flexibility when selecting the panel arrangement for your wetsuit.

Why You Should Consider Your Wetsuit Material’s Flexibility

A scuba diving wetsuit’s flexibility is essential because it directly affects your comfort and mobility underwater. A greater range of motion provided by more flexible wetsuit materials facilitates maneuvering and lessens fatigue during extended dives.

The type of neoprene used, the composition of the lining, and the layout of the panels all affect how flexible a wetsuit is. When assessing flexibility, focus on joints that need a wider range of motion, such as the shoulders, elbows, and knees. The easiest method to choose is to try on a wetsuit and see how flexible it is in various positions.

Types of Wetsuit Zippers

Wetsuit design depends heavily on zippers since they influence how simple it is to put on and take off the suit and how well-fitting and water-resistant it is overall. There are three primary kinds of zippers to take into account:

1. Back Zippers

This classic zipper style runs vertically along the spine and is simple to use. However, it could restrict back flexibility and make scuba diving uncomfortable.

2. Front Zippers

Because they don’t obstruct the spine, they allow greater flexibility and are more comfortable to wear. They can be more difficult to put on and take off, though.

3. Shoulder and Diagonal Zippers

This strikes a balance between flexibility and use. They often run over the shoulder or diagonally over the chest, providing a greater range of motion and greater comfort.

What are the Types of Wetsuits for Scuba Diving?

There are numerous wetsuit varieties available, each with its unique features. Here are the different types and their advantages and disadvantages based on your scuba diving preferences:

1. Shorties

Shorties suits are wetsuits with short sleeves and leg lengths that provide the least amount of insulation and coverage. They are lightweight, simple to put on and take off, and perfect for warm water diving.

2. Spring Suits

Spring suits balance coverage and flexibility by having long sleeves and short legs, or vice versa. They provide more sun and abrasion protection than shorties and are suited for warm water conditions.

3. Full Suits

Full-length suits provide the greatest insulation and protection by completely encasing the body, including the arms and legs. They are perfect for extended dives in the cold, winter, and colder temperatures.

4. Semi-Dry Wetsuit

Compared to conventional scuba diving wetsuits, semi-dry wetsuits are made to offer more thermal insulation. They have sealed seams, snug wrist and ankle seals, and frequently have an integrated hood. Semi-dry wetsuits reduce water entry and circulation, keeping you warmer in chilly waters.

Semi-dry wetsuits cost more than regular wetsuits, but they have many advantages for divers who frequently dive in colder waters. Consider your diving tastes and habits while weighing the benefits and drawbacks of a semi-dry wetsuit.

5. Farmer Johns

These wetsuits are made of sleeveless long johns that are worn underneath a separate jacket. They provide more flexibility while increasing insulation. Farmer Johns is adaptable to your needs and suited for a range of water temps.

Before you select your best option, think about the temperature of the water, the level of insulation and protection you want, as well as your preferences for fit, flexibility, and comfort.

Guide for Thickness and Water Temperature

The degree to which your wetsuit can keep you warm when diving is significantly influenced by its thickness. While thinner wetsuits are more flexible, thicker wetsuits offer better insulation. According to the water’s temperature, use the following general guide to select the appropriate wetsuit thickness:

Water TemperatureScuba Wetsuit Thickness
Above 82ºF (28ºC)Shorty, 1/8” 3mm
Between 77 ºF (25ºC) and 80ºF (27ºC)1/8” 3 mm
Between 70 ºF (21ºC) and 77ºF (25ºC)3/16” 5 mm
Between 59 ºF (15ºC) and 68ºF (20ºC)1/4” 7 mm
Between 50 ºF (10ºC) and 59 ºF (15ºC)Semi-dry suit
Below 50 ºF (10ºC)Dry-suit
Recommended Scuba Wetsuit Thickness Depending on Water Temperature

Moreover, keep in mind that everyone has different tastes and levels of cold tolerance, so you should adjust the thickness of your wetsuit to your comfort level.

Scuba Diving Wetsuits – Guide for Thickness and Water Temperature

Renting vs. Buying a Scuba Wetsuit

Take into account your travel plans, devotion to the activity, and how frequently you dive when determining whether to buy or rent a scuba diving wetsuit.

Scuba Wetsuits Brands

Many well-known scuba brands produce both wetsuits and dry suits. Different brands have various degrees of hardness, flexibility, and general comfort. Here’s where you find the best wetsuit brands. Reputable wetsuit brands include for instance Scubapro, Waterproof, Mares, Cressi, Bare, and Hollis.

Other Factors to Consider When Getting Scuba Divers Wetsuit

Some other factors to think about while choosing a diving wetsuit include the following:

1. Fit and Sizing

As we stated earlier, comfort, insulation, and mobility all depend on proper fit. Wetsuits should always allow for a full range of motion while remaining snug but not constrictive. For the best fit, refer to sizing guides and test on several sizes.

2. Personal Style and Color Options

While utility should come first, your wetsuit choice may also be influenced by your personal style and color choices. Select a wetsuit that suits your personality and gives you confidence while diving.

3. Price and Brand Reputation

When choosing a wetsuit, take your budget into account. You should also research the cost and standing of various brands to make sure you purchase a high-quality item. A higher-quality wetsuit can be more cost-effective in the long term because it might perform better and last longer.

4. Accessibility of Accessories

Some wetsuits include hoods, gloves, or boots as standard equipment, while others call for additional purchases. When choosing a wetsuit, take into account the accessibility and compatibility of various equipment before buying it.

The Impact of Colors on the Underwater Environment

It is crucial to comprehend the significance of colors in the underwater world before looking at the psychological effects of colors on scuba diving. Colors abound in underwater ecosystems, ranging from the mesmerizing blues and greens of the sea to the brilliant hues of marine life. Divers can use color to help with navigation, alert other divers, and identify different marine animals, enhancing the dive’s aesthetic attractiveness.

Colors and Emotions and Their Psychological Relationship in Scuba Diving

Human emotions are profoundly influenced by color, which can trigger a variety of moods and feelings. Certain colors can create particular feelings when used in the context of scuba diving, adding to the entire experience. For instance, divers can feel more at ease and peace in their surroundings because of the relaxing hues of blue and green. Contrarily, vivid hues like red and orange can arouse excitement and vigor, giving a thrilling element to the diving experience.

Understanding Depth and Distance as a Scuba Diver

Divers’ perception of underwater depth and distance is influenced by color as well. The amount of light absorbed as it passes through the water causes the intensity of colors to vary with depth. As divers descend, warm hues like red and yellow tend to disappear, while cold hues like blue and green predominate in the deeper waters. Color attenuation, a phenomenon that affects how far away things appear to be, can occasionally cause people to make poor judgments by giving the impression that things are closer or farther away than they are.


The type of neoprene, lining material, stitching, panel design, flexibility, semi-dry wetsuits, zipper styles, external layer, wetsuit types, and thickness are just a few of the many elements that need to be carefully taken into account when choosing the perfect scuba diving wetsuit. To ensure a fun and secure diving experience, it is crucial to put your wetsuit’s comfort and fit above all else.

You can discover a wetsuit that fits snugly and comfortably by visiting a nearby dive shop and asking for expert advice from knowledgeable instructors. Keep in mind that a properly fitting wetsuit will fit your body, offer adequate insulation, and permit a full range of motion underwater.

Making the best decision for your diving activities ultimately comes down to taking the time to research, assess, and try on various wetsuits with a focus on comfort and fit. Therefore, arm yourself with the information provided in this article and set out on a voyage to explore the beauties of the underwater world in comfort and confidence.


The following are some frequently asked questions about how to choose the right wetsuit for scuba diving.

What Should I Know About Wetsuit Wearing?

Even though wetsuits are made to be skin-tight, you shouldn’t experience acute discomfort while donning one. The wetsuit will first be too tight for your body, but with each wear, it will grow more comfortable. Before your first dive, try the wetsuit on to guarantee comfort.

What Wetsuit Measurement Is Most Important?

The waist and chest measurements are crucial when it comes to sizing because these two areas will guarantee that they keep warm. Since the arms and legs provide no additional warmth, it is not too important if they are excessively lengthy.

What Exactly Is the Wetsuit’s Main Function?

Swimmers, divers, and surfers who swim in cold water frequently wear wetsuits. The swimmers are kept warm or protected by wetsuits. Thus, the swimmers can prevent hypothermia, a condition in which the body temperature is dangerously low.

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