The Expedition Hood Balaclava by BlackStrap is engineered for maximum protection during heavy storms. BlackStrap designed this hood for high-performance days, featuring a lightweight and protective Treo exterior paired with a 360-degree Perfa mesh liner for optimal warmth and breathability. The patented ExoHinge design ensures maximum mobility and ergonomics without compromising fit, while the performance-fit construction allows for seamless compatibility with helmets and other headwear. Fabric Technology: Treo 4-way stretch fabric is breathable, freeze-resistant, and abrasion-resistant with a soft-touch feel. Lining: Full 360-degree wind-rated Perfa dual-layer lining in key areas to minimize windburn and enhance warmth. Mobility: Patented ExoHinge design for superior ergonomics and zero compromise to performance. Fit: Unisex, one size fits most adults (Head Circumference: 21" - 23.75"). Protection: UPF 50+ rated for sun protection; moisture-wicking and thermal-regulating construction. Helmet Compatibility: Ergonomically designed for a seamless fit under helmets and headwear. Materials: 80% Polyester, 20% Spandex. Durability: Features finished seams; abrasion-resistant, odor-free, and lens-safe. Maintenance: Machine washable and dryer safe. Performance Attributes: Dual-layer, quick-dry, and moisture-wicking for maximum comfort in variable conditions.