This product is made of high-quality fabric, soft and comfortable, elastic, not easy to pill, retains shape, does not fade, feels comfortable and durable. It has a slim fit design. It is recommended for those under 1.73 meters to order one size up. Sizes are as follows: [S size for 80-130 lbs], [M size for 80-100 lbs], [L size for 100-115 lbs], [XL size for 115-130 lbs], [2XL for 130-145 lbs], [3XL for 145-160 lbs], [4XL for 160-180 lbs], [5XL for 180-200 lbs]. Due to differences in body shapes, recommended sizes are for reference only and do not serve as reasons for returns. If unsure, please contact our customer service