Description Eberlestock's Cascade Performance Long Sleeve delivers the technical requirements for mountain hunting adventure - moisture management, sun protection, multi-sport versatility - and it does so in a lightweight polyester fabric that has a natural, cotton-like feel. The lightweight, micro-grid knit provides superb quick-drying breathability to keep you comfortable and focused on your adventure. Sizing Size Sleeve Chest Medium 34-35" 39-41" Large 35-36" 42-45" X-Large 36-37" 46-48" XX-Large 37-38" 49-52" Specs Material Polyester Manufacturer Warranty Eberlestock will cover all material or manufacturer defects for the product’s practical lifetime. This does not include normal wear and tear, user modifications, misuse, or accidental damage