Pro Trunk

Long before oversized boardshorts became the norm, swim trunks were designed to move with you—not against you. The Pro Trunk brings that timeless athletic silhouette back with a modern performance twist. Crafted from durable two-ply performance nylon with a lightweight moisture-wicking crepe brief liner, it delivers unrestricted movement, quick-drying comfort, and a clean, retro profile that's equally at home catching waves, swimming laps, or relaxing on the beach. Its 4½-inch inseam and curved hem are designed for natural movement, making it the most performance-focused trunk in the Thousand Mile swim collection.

Designed for Maximum Freedom

Every detail of the Pro is intentional. The athletic cut, curved side hem, and pocket-free exterior reduce bulk and allow unrestricted movement in the water, while a discreet interior key pocket keeps small essentials secure without interrupting the trunk's streamlined profile. A full elastic waistband and round braided polyester drawcord with nylon-tipped ends provide a secure fit that stays comfortable all day.

Crafted from Two-Ply Performance Nylon

Constructed from durable two-ply performance nylon, the Pro is lightweight, quick drying, and built to perform through countless days of sun, surf, and saltwater. The breathable moisture-wicking crepe brief liner provides comfortable support, dries quickly, and helps reduce chafing whether you're swimming, surfing, paddleboarding, or simply enjoying the water.

Why You'll Love It

• 4½-inch inseam
• Durable two-ply performance nylon shell
• Lightweight moisture-wicking crepe brief liner
• Athletic retro-inspired fit
• Curved side hem for unrestricted movement
• Interior key pocket
• Full elastic waistband
• Round braided polyester drawcord with nylon-tipped ends
• Quick drying
• Made in the USA
• Born for the water. Inspired by the classics.