Men's 21 in Boardshorts - Quick Dry Stretch Swim Trunks

Our review of these Men's 21 in Boardshorts finds them best for swimmers and beachgoers who want a reliable, comfortable pair of trunks that dry fast and move with you. The single biggest reason to buy is the combination of Hyperfreak stretch and Hyperdry technology, which delivers true four-way mobility and noticeably quicker dry time after exiting the water. Constructed from 100% polyester with a below-the-knee 21 in outseam, they balance coverage, comfort, and everyday practicality for active use.

Key Features

• 21 in Outseam: Provides a below-the-knee fit that stays in place for paddling, swimming, or casual wear.
• Hyperfreak Stretch: Four-way stretch fabric moves with the body so mobility is not restricted during active water sports.
• Hyperdry Technology: DWR quick-dry treatment reduces wet time so trunks feel lighter and more comfortable after exiting the water.
• Anti-Rash Hyperthread: Construction and soft fabric reduce chafing for longer sessions in and out of the surf.
• Storage Pocket: A side zip and a velcro patch pocket provide secure spots for small essentials when on the beach.
• Practical Closure: Velcro fly with a spandex gusset and drawstring keeps the waist adjustable and secure.

Who It's For

These boardshorts are aimed at men who take part in active water sports or want a dependable swim trunk for travel and casual beach days. The stretch fabric and quick-dry finish suit surfers, paddleboarders, and swimmers who need trunks that move and dry fast.

Those who prefer lined swim briefs or want a very tailored, short-length trunk should look elsewhere; these are true boardshorts with a 21 in outseam and no mesh lining, offering more coverage and a relaxed fit.

Pros & Cons

Pros

• Comfortable four-way stretch fabric that enhances freedom of movement.
• Quick-dry Hyperdry treatment reduces soggy post-swim feel.
• Well-made finish and stable length that sits just above the knee for good coverage.
• Useful storage with a side zip pocket plus a velcro patch pocket on the leg.

Cons

• Sizing feedback is mixed; some customers find them running slightly large so trying standard size guidance is wise.
• No mesh lining, which some buyers expect for quick drainage or added support.

Specifications

Brand	O'NEILL
Material	100% polyester
Outseam	21 in
Technologies	Hyperfreak stretch, Hyperdry, Hyperthread
Pockets	Side zip pocket and velcro patch pocket
Closure	Velcro fly with spandex gusset and drawstring
Origin	Imported

Our Verdict

These 21 in boardshorts are a strong choice for active men who need stretch, quick drying, and practical pockets in a below-the-knee cut. They deliver good material quality, comfort, and coverage, and represent solid value for anyone prioritizing mobility and rapid dry time over a lined brief feel.

Frequently Asked Questions

Do these boardshorts dry quickly?
Yes. The Hyperdry DWR treatment accelerates drying compared with untreated polyester trunks.

Is there a mesh lining?
No. These shorts do not include a mesh lining; they have a spandex gusset in the fly for comfort instead.

How does sizing run?
Sizing is mixed in customer feedback; many find the fit true to size but some report they run a bit large, so follow the store size guide when selecting.