Marcin Men's Performance Swim Trunks – 80% Nylon Competitive Swimwear

Most Swim Trunks Are Built for the Beach. These Are Built for the Pool.

There is a fundamental difference between swimwear designed for the beach and swimwear designed for the pool — and most men’s swim trunks fall firmly into the first category. Beach swimwear is designed to look good on the sun lounger, to survive the occasional dip, and to dry quickly enough for a walk back to the towel. It is not designed for the sustained chlorine exposure, the repeated stretching, and the performance demands of regular pool training. Wear beach swimwear in the pool consistently, and within a season it will be stretched, faded, and degraded beyond use.

The Marcin Men’s Performance Swim Trunks are built for the pool. The 80% nylon, 20% spandex construction is the material choice of competitive and fitness swimmers worldwide — chosen specifically because it delivers the stretch, support, chlorine resistance, and durability that pool training demands. This is not a compromise between comfort and performance. It is both, engineered into a single piece of swimwear that performs consistently from the first session to the hundredth.

Why 80% Nylon Is the Gold Standard for Pool Swimwear

Nylon is the material of choice for serious swimwear for reasons that go beyond marketing. It combines exceptional tensile strength with a smooth, low-friction surface that moves through water with minimal resistance. It holds its shape under tension and recovers quickly after stretching — which means these trunks fit as well after 50 sessions as they did on day one. It resists the degradation that chlorine causes in lesser fabrics, maintaining colour, elasticity, and structural integrity through hundreds of pool sessions.

The 20% spandex component adds the four-way stretch and recovery that makes the fit feel like a second skin rather than a constraint. The fabric moves with your body through every stroke, turn, and kick without pulling, binding, or shifting. The result is swimwear that you stop thinking about the moment you enter the water — which is exactly where your attention should be.

Chlorine Resistance That Lasts the Season

Chlorine is the enemy of swimwear. It breaks down elasticity, fades colour, and degrades fabric over time — the reason most swimwear looks worn and stretched after a season of regular pool use. The chlorine-resistant construction of these trunks is engineered to resist that process, maintaining shape, colour, and performance through session after session. They look as good on the pool deck after 50 sessions as they did on day one, which makes them a genuine investment rather than a seasonal replacement.

Streamlined Cut and Secure Waistband

The streamlined cut reduces drag in the water while providing the coverage and confidence that pool training requires. The secure waistband keeps everything in place whether you’re racing, training, or simply making the most of a summer’s day — no adjusting mid-session, no shifting during turns, no distraction from the work. Available in Black, Blue, Lake Blue, Red, and Orange across sizes M through 2XL, with a bold colour palette that performs as well as it looks.

Specifications

• Material: 80% Nylon, 20% Spandex
• Type: Performance swim trunks
• Features: Chlorine-resistant, four-way stretch, secure waistband, streamlined cut
• Colours: Black, Blue, Lake Blue, Red, Orange
• Sizes: M, L, XL, 2XL, 3XL
• Gender: Men’s
• Use: Competitive swimming, lap training, triathlon, water polo, beach