Description ***Sitka&';s Standard Fit is designed to accommodate layering for added versatility across early-to-late season conditions.*** The Sitka Microdown Vest delivers premium insulation in a lightweight, highly packable layer that adds warmth without unnecessary bulk. Filled with 700-fill Allied Down treated with ExpeDRY technology, it provides exceptional warmth while maintaining performance in damp conditions. The 27D polyester ripstop shell with a DWR finish offers durable protection and sheds light precipitation, making it a dependable layer for changing weather. Compact and efficient, the Microdown Vest provides versatile insulation that layers easily and keeps you comfortable when temperatures drop. Sizing Size Chest Medium 39" - 41" Large 42" - 45" Large Tall 42" - 45" X-Large 46" - 49" X-Large Tall 46" - 49" XX-Large 50" - 53" XXX-Large 54" - 57" How to Measure: Chest Measure around the fullest part of your chest, keeping the tape under your arms and across your shoulder blades.