10 Best Triathlon Wetsuits 2026 in the United States

The Synergy Endorphin Men's Full Sleeve Triathlon Wetsuit is designed for triathletes of all levels, offering a great balance of performance and comfort. Made from high-quality Yamamoto #39 neoprene with a silicone coating, it provides excellent flexibility—claimed to stretch up to 680%, which helps with free arm movement during swimming. The wetsuit’s thickness varies from 5mm in the core for maximum buoyancy (helping you float higher and swim more efficiently) to thinner 2mm panels on the arms and shoulders for better mobility. This makes it suitable for colder water while still allowing a good range of motion. The fit is enhanced by a wide size range, aimed at securing a snug but comfortable feel, which is crucial in keeping water entry minimal and improving swim speed.

The YKK internal zipper is corrosion-resistant and designed to reduce drag, which is a nice touch for serious swimmers. The soft, low neck design adds comfort without restricting movement. Since it’s a 5mm thick wetsuit, it might feel a bit bulkier or warmer than thinner options if used in temperate or warm water. While it has many features for flexibility and buoyancy, some users might find pricing or availability a consideration as it’s a specialized product. The 2-year warranty provides reassurance for durability. This wetsuit is ideal for triathletes seeking a reliable, high-buoyancy wetsuit that balances warmth, flexibility, and speed, especially in colder open-water conditions.

The Dark Lightning Full Body Wetsuit is made from 3/2mm premium stretch neoprene, providing a good balance of warmth and flexibility for water temperatures around 58–68°F. This thickness is suitable for mild to cool conditions, making it a solid choice for recreational swimmers, surfers, and triathletes training in those environments. Its high-elasticity neoprene helps maintain unrestricted movement, an important feature for swimming and paddling activities.

The fit has been improved based on customer feedback, and the availability of an updated size chart helps users find a comfortable match. The wetsuit features a classic back zipper with an extended leash, making it easy to put on and take off, even for beginners. However, this back zipper design might allow some water entry compared to front or chest zippers commonly preferred in higher-end triathlon wetsuits for reduced drag and better sealing. The seams appear standard, offering decent durability but may not be as smooth or glued for maximum water resistance and comfort seen in more expensive models. The plain black design keeps it versatile and understated, appealing to those who want simplicity over flashy colors.

This wetsuit offers good buoyancy and warmth for its thickness but might not be ideal for very cold water or serious competitive triathletes seeking specialized features like ultra-flexible panels or advanced seam technology. It fits well for recreational and entry-level triathlon or multisport users seeking an affordable and comfortable option in moderate water temperatures.

The O'Neill Men's Reactor-2 3/2mm Back Zip Full Wetsuit is a strong contender for beginners and value-conscious triathletes. Made from ultra-stretch neoprene, it boasts remarkable flexibility and comfort, essential for various water activities like surfing, diving, or paddle sports. The 3mm thickness provides a good balance of warmth and mobility, making it suitable for moderate temperatures. The fit is designed to accommodate larger frames, ideal for those with a chest size of 40-44 inches and a height around 6 feet, although it’s always best to try it on for personal comfort.

The back-zip system is a user-friendly feature, making the wetsuit easy to put on and take off, with a water-resistant closure to minimize water entry. Buoyancy isn't specifically highlighted, but the 3/2mm neoprene should provide adequate lift in the water. The seamless paddle zones are a notable strength, reducing chafing and allowing for greater arm movement. Additionally, the wind-resistant smoothskin offers extra insulation against the cold, increasing comfort during use.

One potential downside could be the seams, which, though minimal, might not be as durable as fully sealed or taped seams found in higher-end wetsuits. Also, while the back zipper is convenient, front-zip alternatives can sometimes provide a better seal and flexibility around the torso. This wetsuit is best suited for entry-level users and those engaging in a variety of water sports, looking for a reliable and comfortable wetsuit at a reasonable price.