No matter what the weather throws at you, The Dual Layer Tube will keep you comfortable and charging all day long. Constructed with a temperature-regulating TREO fabric exterior and a seamless PERFA dual-layer mesh liner for added warmth without compromising breathability, the Dual Layer Tube ensures that you stay warm in the most extreme environments.

• One size fits most adults - Head Circumference: 21" - 23.75", Crown Length: 7.25" - 9.26"
• TREO is a breathable, 4-way stretch fabric that is both freeze-resistant and abrasion-resistant, featuring a soft-touch, next-to-skin feel for comfort. Its construction ensures optimal thermal regulation and moisture management, with UPF50 rating.
• The wind-rated PERFA dual-layer liner offers enhanced warmth and protection from the elements, effectively minimizing windburn.
• Versatile design with multiple wearing applications.
• Dimensions: (approx.) 16 (L) x 10 (W) inches.
• Fabric Content: 80% Polyester, 20% Spandex