O'Neill Wetsuits - O'Neill Thermo Hooded Neo Thermal Rashvest - Black :: Men > Rash Vests. Hood thickness: 1mmStrategic Seamless Paddle Zones: 4 way stretch with anatomically shaped panels for more efficient movementPolypro Material: Provides excellent insulation in a minimal bulk fabricUV Protection: UPF 50+Performance Fit: Tighter construction across the abdomen and shoulders for a second skin feelQuick Dry: YesFlatloc Stitched Seams: Breathable and comfortable constructionSuper Low Crew Neck: Means no interference with wetsuit neckDurable Water Resistant Coating: For maximum insulation and water wicking properties Size: X-Large,one size.