O'NEILL Men's 21 in Solid Boardshorts - Quick Dry Stretch Comfort 248
O'NEILL Men's 21 in Solid Boardshorts - Quick Dry Stretch Comfort 248
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In this review of the O'NEILL Men's 21 in Solid Boardshorts the bottom line is simple: these are a reliable pair of swim trunks for men who want a below-the-knee fit with fast drying and flexible movement. The shorts are built with Hyperfreak Stretch fabric and Hyperdry technology, so they dry fast after a swim and move with the wearer during active days at the beach or on a board. Comfort features such as an anti-rash Hyperthread construction and a spandex fly gusset make them suitable for long sessions without irritation.
Key Features
- 21 in outseam: The below-the-knee length provides modest coverage and a classic boardshort silhouette for most builds.
- Hyperfreak Stretch: Four-way stretch fabric allows unrestricted movement for paddling, surfing, or beach volleyball.
- Hyperdry quick-dry: Durable water repellent treatment and fast-drying polyester speed up water release so the trunks dry quickly between uses.
- Anti-rash Hyperthread: Seam and fabric choices reduce chafing so the shorts stay comfortable during extended wear.
- Secure storage: A side zip pocket plus a Velcro patch pocket give you options for small items while active.
- Adjustable fit: Velcro fly with spandex fly gusset and drawstring closure lets you dial in the waist for a secure fit.
Who It's For
These boardshorts are best suited to men who want a traditional below-the-knee boardshort with modern performance fabric: surfers, paddleboarders, or anyone who spends long days in and out of the water will appreciate the quick-dry treatment and stretch. The design works well for those who prefer a classic fit rather than short, athletic swim trunks.
Shoppers who need a very tailored or shorter swim brief should look elsewhere, and those who require heavy insulation or cold-water wetsuit features will need a different product. Also be aware sizing can vary for some customers, so check waist measurements if you are between sizes.
Pros & Cons
Pros
- Comfortable four-way stretch that moves with you during active water sports.
- Quick-dry Hyperdry finish reduces dampness after swimming and shortens dry time.
- Anti-rash Hyperthread and spandex fly gusset prevent chafing during long wear.
- Functional pockets including a side zip pocket provide secure storage.
Cons
- Sizing runs mixed for some customers, with a few reporting they run large relative to usual waist size.
- The classic 21 in length may be too long for buyers who prefer shorter performance trunks.
Specifications
| Brand | O'NEILL |
| Outseam | 21 in |
| Material | 100% polyester with DWR treatment |
| Technologies | Hyperfreak Stretch, Hyperdry, Hyperthread |
| Pockets | Side zip pocket and Velcro patch pocket |
| Closure | Velcro fly with spandex fly gusset and drawstring |
| Imported | Yes |
Our Verdict
The O'NEILL Men's 21 in Solid Boardshorts are a sensible buy for men wanting durable, quick-drying boardshorts with stretch and anti-rash comfort; they balance function and classic styling and represent good value for active water use, though buyers should confirm waist sizing if uncertain.
Frequently Asked Questions
Are these boardshorts true to size?
Fit is generally true for many buyers, but reviews are mixed so measure your waist and consult size guidance if you are between sizes.
Do they dry quickly after swimming?
Yes, the Hyperdry DWR treatment and polyester construction speed evaporation so they dry faster than untreated cotton shorts.
Will these cause chafing during long sessions?
Unlikely-the Hyperthread anti-rash construction and spandex fly gusset are designed to reduce rubbing and improve comfort.
Editor's Take
The O'NEILL Men's 21 in Solid Boardshorts deliver quick-drying, four-way stretch performance with anti-rash comfort and useful pockets, making them a strong choice for active beachgoers who want classic below-the-knee coverage.

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