The O'Neill Hyperfreak Heat Block 21" Boardshorts feature a fixed waist design with a below the knee fit, built from Hyperfreak Stretch fabric made with recycled polyester for lightweight comfort and mobility. A 21-inch outseam, Hyperdry DWR for quick drying performance, flex tie drawcord, side zip pocket, and anti rash Hyperthread construction round out a durable, performance focused boardshort.
Product Info
The O'Neill Hyperfreak Heat Block 21" Boardshorts feature a fixed waist design with a below the knee fit, built from Hyperfreak Stretch fabric made with recycled polyester for lightweight comfort and mobility. A 21-inch outseam, Hyperdry DWR for quick drying performance, flex tie drawcord, side zip pocket, and anti rash Hyperthread construction round out a durable, performance focused boardshort.
If you are not 100% satisfied with your purchase you may return it for a refund, or exchange within 30 days of receiving your order.
Cleanline Surf General Return Policy
Holiday Returns
For any orders placed after Nov 1st, 2025, we have extended our normal 30-day return policy to allow returns through January 31st, 2026.
Returns are easy! We understand that in some situations returns may be necessary. We also want you to be stoked on your purchase. If you are not 100% satisfied with your purchase you may return it for a full refund, within 30 days of receiving your order. Items must be in new condition with original tags and packaging.
Please refer to our full Return Policy for more details.
O'Neill Men's Clothing Size Chart
How to measure:
Chest: With your arms relaxed by your side, measure around the fullest part of your chest.
Waist: Measure around your natural waistline.
Hips: Measure around the fullest part at the top of your hips.
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