O'NEILL Men's 21 Inch Solid Boardshorts - Quick Dry Stretch

In this review of the O'NEILL Men's 21 Inch Solid Boardshorts we look at who will get the most from these trunks and the single biggest reason to buy them: reliable, comfortable performance for active water days. These boardshorts pair a below-the-knee 21 in outseam with Hyperfreak stretch so they move with you, and O'NEILL Hyperdry plus Anti-Rash Hyperthread technologies speed drying while reducing chafe. The reviewer found them best for swimmers, surfers and casual beachgoers who want solid coverage, quick dry performance and a secure pocket for small essentials.

Key Features

• 21 in Outseam: Provides a below-the-knee fit that balances coverage and mobility for paddling or beach play.
• Hyperfreak Stretch: Four-way stretch fabric lets the shorts move with dynamic activity without pulling or binding.
• Hyperdry Technology: Durable water-repellent treatment and quick dry finish reduce time in a wet suit and keep you comfortable after exiting the water.
• Anti-Rash Hyperthread: Constructed to minimize chafing so longer sessions in the water or on a board stay comfortable.
• Side Zip Pocket: A secure zip pocket on the leg keeps small items safe while active at the beach or pool.
• Velcro Fly with Drawstring: A velcro fly with spandex gusset and drawstring closure offers a secure, adjustable waist fit.

Who It's For

These boardshorts are aimed at men who spend time in the surf or on the beach and want dependable performance features rather than fashion-only shorts. The combination of stretch, quick dry finish and anti-rash stitching makes them a good choice for surfers, paddleboarders and swimmers who need mobility and comfort for extended activity.

Those who prefer a lined swim short or a very short trunk style should look elsewhere, since these are unlined, below-knee boardshorts with a traditional outseam. If you need a very slim, tailored swim brief or a lounge-focused short with softer drape, these are not the ideal option.

Pros & Cons

Pros

• Durable four-way stretch fabric that moves naturally during active water sports.
• Quick dry DWR treatment gets shorts ready for more action sooner after exiting the water.
• Secure side zip pocket and reliable velcro fly with drawstring for storage and fit security.
• Constructed to reduce chafing with Anti-Rash Hyperthread for longer comfort.

Cons

• Sizing feedback is mixed; some customers find them a bit roomy, so try your usual size or check measurements.
• No mesh lining, which some users expect for swim trunks and airflow.

Specifications

Brand	O'NEILL
Outseam	21 in
Material	100% polyester with DWR treatment
Technologies	Hyperfreak Stretch, Hyperdry, Anti-Rash Hyperthread
Pocket	Velcro patch pocket and side zip pocket
Closure	Velcro fly with spandex gusset and drawstring
Origin	Imported

Our Verdict

These O'NEILL 21 in boardshorts are a solid choice for active water users who need stretch, quick dry performance and protection against chafing. They deliver practical features like a secure zip pocket and a comfortable below-knee fit, making them good value for surfers and swimmers who favor function over lining or ultra-slim styling.

Frequently Asked Questions

Do these boardshorts have a mesh lining?
No, these shorts are not lined; they are configured as unlined boardshorts with a spandex gusset in the fly.

Are they quick drying?
Yes, the Hyperdry technology and DWR treatment speed up drying time compared with untreated polyester shorts.

How do they fit relative to regular sizes?
Fit is generally true to size for many customers, but some report they run a bit large, so consult the size guide and consider trying your normal waist first.