Comfortable, quick-drying, polyester fleece adds lightweight warmth and won't absorb moisture. Streamlined design for layering, and looks great on its own as well. Deep zip at center chest for quick venting. Sizing: Size Conversion: X-Small = 0-2 | Small = 4-6 | Medium = 8-10 | Large = 12-14 | X-Large = 16 | XX-Large = 18 Model is 5'8” wearing size X-Small Model is 5'10” wearing size Small Model is 5'7” wearing size Large