O'NEILL Men's 21 in Solid Boardshorts - Quick Dry Stretch Fit 86

In this review of the O'NEILL Men's 21 in Solid Boardshorts the bottom line is simple: these shorts are best for men who want a below-the-knee swim trunk that moves easily and dries fast. The reviewer found the combination of Hyperfreak stretch and Hyperdry technology makes them comfortable for active beach days or pool workouts, while the anti-rash Hyperthread keeps skin irritation to a minimum. Fit is generally true to size for many wearers, though a few customers reported a roomier fit, so consider your preferred waist fit when ordering.

Key Features

• 21 in Outseam: Provides a below-the-knee length that offers modest coverage for surf, swim, and casual wear without restricting movement.
• Hyperfreak Stretch: Fabric stretches in all directions so the shorts move with you during paddling, diving, or walking along the beach.
• Hyperdry Technology: Durable water repellent treatment speeds drying time so the shorts are comfortable off the water and between uses.
• Anti-Rash Hyperthread: Built-in anti-chafe construction reduces irritation during prolonged activity and prevents typical rash points.
• Side Zip Pocket: A secure zip pocket at the side gives safe storage for small essentials like keys or cards while active.
• Velcro Fly and Drawstring: Combined closure with a spandex fly gusset keeps the waistband adjustable and secure during movement.

Who It's For

The O'NEILL 21 in boardshorts suit men who regularly participate in water sports, surf sessions, or long beach days and need a quick dry, flexible short that resists chafing. The below-knee length and stretch fabric make them good for surfers, swimmers, and anyone who prefers modest coverage with freedom of motion.

Those who want a very slim or fashion-trimmed short may want to look elsewhere, as some customers report a slightly roomier waist. If you need lined swim trunks or extremely tailored dress-casual shorts, these performance-focused boardshorts may not match that requirement.

Pros & Cons

Pros

• Comfortable stretch fabric that moves in all directions for active use.
• Quick dry Hyperdry finish reduces post-swim dampness and speeds turnaround time.
• Anti-rash Hyperthread construction prevents chafing on long sessions.
• Functional storage with a secure side zip pocket and Velcro patch pocket.

Cons

• Sizing is mixed for some buyers, with a few finding the waist runs a bit large compared with their usual size.
• The solid design and below-knee cut are performance-oriented and not a tailored fashion short.

Specifications

Our Verdict

These O'NEILL 21 in boardshorts are a strong choice for active men who prioritize mobility, quick drying, and comfort during extended water activities. The stretch fabric and anti-rash construction add durable, practical value, and the secure pocket options make them useful beyond the beach. They offer solid performance for the price, though buyers who prefer a very snug waist or a lined designer trunk should check sizing carefully.

Frequently Asked Questions

Are these boardshorts quick drying?
Yes, the Hyperdry DWR treatment is designed to accelerate drying so they dry faster than untreated polyester shorts.

Do they prevent chafing?
The Anti-Rash Hyperthread construction reduces irritation and customers report minimal chafing during activity.

Do these run true to size?
Many customers find the fit true to size, but a portion report a slightly roomier waist, so consider sizing based on your preferred fit.