Mountain Hardwear Women's Size Chart Lightweight and durable, the Canyon Pro is designed to be the ultimate backpacking shirt. You'll be covered on all fronts with stretch, ventilation, wicking, and UPF 50 sun protection. Features: - UPF 50 - Secure zip pocket - Low zip pocket at waist - Mechanical stretch for freedom of movement - Sun collar - CDT Stretch (60% Nylon, 40% Polyester) Fabric Weight: 3.2 oz / 90 g