Description ***Sitka&';s Standard Fit is designed to accommodate layering for added versatility across early- to late-season conditions. We recommend ordering this true to size.*** The Sitka Kelvin LT Hooded Jacket delivers lightweight, breathable insulation for active hunts, cold mornings, and changing weather. Body-mapped PrimaLoftA(R) Silver insulation places 60g through the core and 40g in the sleeves and hood for warmth without unnecessary bulk, while STORMFLEECE(TM) side and underarm panels improve breathability and mobility during high-output movement. A 27D ripstop shell with DWR treatment helps shed light moisture, and the regular fit, low-profile cuffs, adjustable hem, and full-coverage hood make it easy to layer across a wide range of conditions. Specs Material 27D ripstop polyester shell with water-shedding DWR finish Insulation Body-mapped PrimaLoftA(R) Silver insulation for more warmth where you need it most (60g body, 40g sleeves/hood) Manufacturer Warranty Warrantied against manufacturer defects Sizing Size Chest Sleeve Medium 39" - 41" 34" 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" 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.