This Mountain Warehouse top is made from 95% Polyester and 5% Elastane, offering a comfortable and flexible feel. The design is plain with a classic crew neck and long sleeves. Engineered with IsoCool technology, the fabric is breathable, lightweight, and moisture-wicking, ensuring you stay dry and comfortable. It features a relaxed fit for ease of movement. Please note: Wash before first use. Sizing information: 4 UK: 32 in, 6 UK: 33 in, 8 UK: 34 in, 10 UK: 35 in, 12 UK: 37 in, 14 UK: 39 in, 16 UK: 41 in, 18 UK: 44 in, 20 UK: 47 in, 22 UK: 50 in, 24 UK: 52 in.