Description ***Sitka's Performance Fit is designed for minimal layering. Whether worn as an early-season piece or with built-in insulation, this fit reduces excess space to improve heat retention and efficiency.*** The Sitka Core Lightweight Crew Long Sleeve is a versatile base layer built for early-season hunts and high-output pursuits across changing conditions. Made from a lightweight, quick-drying synthetic fabric, it efficiently manages moisture while providing comfortable stretch for all-day movement. Whether worn as a standalone top in warm weather or layered into a complete system, this crew delivers reliable performance across seasons and pursuits. Sizing Size Chest Sleeve Small 36 - 38" 33" Medium 39 - 41" 34" Medium Tall 39 - 41" 36" Large 42 - 45" 35" Large Tall 42 - 45" 37" X-Large 46 - 49" 36" X-Large Tall 46 - 49" 38" XX-Large 50 - 53" 37" XX-Large Tall 50 - 53" 39" XXX-Large 54 - 57" 38" How to Measure: Chest Measure around the fullest part of your chest, keeping the tape under your arms and across your shoulder blades. Sleeve Bend your elbow and place your hand on your hip. Measure from the center back of your neck, across your shoulder, down your arm, over the elbow, and to the wrist bone. Specs Weight 5.1 oz (large) Material Quick-Dry, Lightweight Comfort Stretch Knit (100% Polyester) Manufacturer Warranty Warrantied against manufacturer defects