10 Best Triathlon Shorts 2025 in the United States

The Onvous Swim Jammers for Men are a versatile option for those involved in various aquatic and athletic activities. Made from a blend of LYCRA Xtra Life and polyester, they offer a comfortable 4-way stretch, ensuring flexibility and compression which is great for training, lap swimming, and other water sports.

The material is quick-drying and chlorine-resistant, adding to its durability and practical use for all-day wear. The inclusion of a drawstring and liner provides a secure and private fit, which is essential for maintaining comfort during extended use.

These jammers also offer UPF 50+ protection, making them suitable for outdoor swimming or activities under the sun. Available in multiple colors and sizes, they cater to a wide range of preferences and body types.

The MY KILOMETRE Triathlon Shorts Mens 9" boast several features making them suitable for serious triathlon enthusiasts. The shorts are made from a blend of 78% Regenerated Polyamide and 22% Xtra Life Lycra, offering a balance of durability and flexibility. This material also provides chlorine resistance and UPF 50+ protection, making them suitable for both indoor swimming and outdoor activities. The moderate compression provided by the fabric helps improve blood flow and reduce muscle fatigue during long races.

One notable feature is the MK TRI2.0 MULTI DENSITY CHAMOIS, designed for the aero position to enhance comfort during cycling and running, which is crucial for long-distance triathlons. The ultra-thin, ultra-light elastic leg grippers ensure the shorts stay in place without causing discomfort from silicone grippers. Additionally, the flat locked stitching reduces chafing and follows the contours of the body, further enhancing comfort. The accessible storage pockets on the sides of the legs are a practical inclusion, allowing for easy access to nutrition and other essentials during races.

However, some users might find the care instructions (hand wash only) to be a bit inconvenient. Additionally, the fit might vary depending on individual body types, so it might be worth considering trying them on before purchase. These shorts are well-suited for triathletes looking for a comfortable and functional option for their training and races.

The MY KILOMETRE Triathlon Shorts are designed for athletes seeking performance and comfort in long-distance races. The main fabric is a blend of 78% Regenerated Polyamide and 22% Xtra Life Lycra, which offers moderate compression, chlorine resistance, and UPF 50+ protection. These features make the shorts suitable for both indoor pool swims and outdoor activities.

The inclusion of accessible nutrition storage pockets on the sides of the legs is a thoughtful addition for easy access during bike rides or runs, enhancing convenience for athletes. The MK TRI2.0 MULTI DENSITY CHAMOIS is specifically designed to provide comfort in the aero position, which is crucial for long cycling sessions and transitions to running. This padding aims to maximize performance without compromising comfort.

The ultra-thin and ultra-light elastic leg grippers ensure a snug fit without causing silicone discomfort, adding to the comfort and flexibility of the shorts. Flat locked stitching is used to prevent chaffing and enhance durability, benefiting those who engage in rigorous activities. However, the shorts require hand washing, which might be inconvenient for some users. Additionally, the drawstring closure might not be preferred by everyone, as some might find it less secure compared to other closure types. Despite these minor drawbacks, the MY KILOMETRE Triathlon Shorts are a strong contender for triathletes looking for reliable, comfortable, and performance-oriented gear.