Velcro design SIZE CHART:order a size up would be recommend S: bust 88cm, hips 82cm, waist 76cm, suitable for weight 50-59kg, suitable for height 160-167cm M: bust 92cm, hips 86cm, waist 80cm, suitable for weight 59-65kg, suitable for height 167-173cm L: bust 96cm, hips 90cm, waist 84cm, suitable for weight 65-72.5kg, suitable for height 173-175cm XL: bust 100cm, hips 94cm, waist 88cm, suitable for weight 72.5-77.5kg, suitable for height 175-180cm 2XL: bust 104cm, hips 98cm, waist 92cm, suitable for weight 77.5-82.5kg, suitable for height 180-185cm 3XL: bust 108cm, hips 102cm, waist 96cm, suitable for weight 82.5-90kg, suitable for height 185-190cm It is made of durable material neoprene, which can be stretched and insulated Ergonomic design fits your body tightly, effectively reduce water resistance. High elasticity with fine stitching, ensure your maximum flexibility and comfort. The round neck design is more intimate, prevents water pockets and reduces resistance High elasticity and durability; high elasticity, waterproof and heat insulation; soft and close heating to keep warm, comfortable and soft to keep warm