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Basic 4" Swim Trunk

$44.95

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A streamlined 4-inch swim trunk built for maximum freedom in the water.

Color: Navy

Size: S

S M L XL 2XL

Some days are best spent in the water. The Basic 4" Swim Trunk is designed for those days, combining a lightweight two-ply performance nylon shell with a quick-drying moisture-wicking crepe brief liner for exceptional comfort in and out of the water. By eliminating pockets entirely, it reduces drag while swimming and creates a clean, minimalist silhouette that moves effortlessly with every stroke. With its 4-inch inseam, it's the shortest and most streamlined trunk in the Thousand Mile swim collection.

Designed for Pure Swimming

The Basic 4" Swim Trunk focuses on what matters most—comfort, freedom of movement, and performance in the water. A full elastic waistband and round braided polyester drawcord with nylon-tipped ends provide a secure, comfortable fit, while the pocket-free design eliminates unnecessary bulk and resistance for a smoother swim.

Crafted from Two-Ply Performance Nylon

Constructed from our durable two-ply performance nylon, the Basic 4" Swim Trunk is lightweight, quick drying, and built to withstand countless days at the beach, pool, river, or lake. The breathable moisture-wicking crepe brief liner dries quickly, provides comfortable support, and helps reduce chafing whether you're swimming or relaxing on shore.

Why You'll Love It

4-inch inseam
Durable two-ply performance nylon shell
Lightweight moisture-wicking crepe brief liner
Pocket-free design for reduced drag
Full elastic waistband
Round braided polyester drawcord with nylon-tipped ends
Quick drying
Made in the USA
Nothing extra. Everything you need.

USA-grown Cotton
Made in USA
Built to Last

Specifications

Shell
Two-ply performance nylon

Liner
Moisture-wicking crepe brief liner

Inseam
4 inches

Waist
Full elastic waistband with nylon-tipped cotton drawstring

Pockets
None

Origin
Made in USA

Care
Machine wash cold • Tumble dry low • Do not bleach

Features

Built for the Water
With no pockets to create drag, the Basic 4" Swim Trunk delivers unrestricted movement and a clean, streamlined profile that's ideal for swimming, paddle sports, and long days in the water.

Quick-Drying Comfort
The lightweight two-ply performance nylon shell sheds water quickly, while the breathable crepe brief liner provides support, dries rapidly, and helps keep you comfortable both in and out of the water.

Minimal by Design
Every detail has been carefully considered. By removing unnecessary features, the Basic focuses on lightweight comfort, dependable performance, and timeless style.

4 Inches of Freedom
The 4-inch inseam provides maximum mobility with a classic athletic look, making it the shortest swim trunk in the Thousand Mile collection and a favorite for active days on the water.

Made in the USA
Every Basic 4" Swim Trunk is proudly cut and sewn in the United States using premium performance materials, continuing Thousand Mile's commitment to quality American craftsmanship since 1993.

Orders over $200 ship free
30 day returns