10 Best Triathlon Shorts 2025 in the United States

The 361º Swim Jammers are made from a durable blend of polyester and spandex, offering a lightweight, quick-drying, and stretchy fabric that supports muscle compression and freedom of movement during swimming and triathlon activities. Their chlorine-resistant material is designed to maintain shape and color through extended use, making these jammers a reliable choice for frequent swimmers. The adjustable drawstring waistband helps secure fit, and the smooth seam construction reduces drag in water.

These swim jammers do not include padding (chamois), which is often desired in triathlon shorts for added comfort during cycling and running stages. They also lack leg grippers or pockets, features typically useful in triathlon shorts to prevent riding up and store small items. If your primary focus is swimming performance and you prefer a streamlined, compression fit without extra bulk, these jammers are suitable. However, for a multi-stage triathlon short with padding and storage, this product may not meet those needs.

The SLS3 Triathlon Shorts for men are designed with the athlete in mind, offering a mix of support, comfort, and practical features. Made from 80% Nylon and 20% Spandex, the material provides a good balance of comfort and muscle support without being overly tight. The shorts feature flatlock seams and a waistband with a drawstring, which help prevent chafing during long races.

The padding is foam-cushioned, designed to offer support during cycling without being bulky, making it comfortable for running as well. Two open hip pockets are conveniently placed for easy access to energy gels or small items, which is a thoughtful touch for endurance athletes. The leg grippers at the hem ensure that the shorts stay in place, eliminating the need to adjust them mid-race.

The sizing is X-Large, and the color is black, which should appeal to a broad audience. These shorts are manufactured in China and are targeted towards male triathletes looking for reliable and affordable race gear. The SLS3 Triathlon Shorts strike a good balance of performance-focused features, comfort, and affordability, making them a solid choice for triathletes.

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.