I used this for soccer. There are some loose stitches. Please understand that there may be some pilling. Material Composition: 88% Polyester, 12% Spandex Washing Instructions: Machine Washable Closure Type: Pull On Neck Style: Jewel Neck About this product 【Breathable & Warm Sports Underwear Set】By using high-density microfiber yarn, it combines warmth and comfort, prevents chills from sweat with high sweat-wicking and quick-drying properties, and keeps the inside of the clothes comfortable by suppressing the dissipation of body heat. It achieves excellent heat retention and comfort with a soft touch. It's warm from the moment you put it on. You can wear it for various sports, mainly baseball. 【Comfortable to the touch】Muxuryee's undershirts use flat seam stitching, which makes movement smoother and reduces uncomfortable tightness. 【Compression & Reduces Muscle Fatigue】Appropriate compression stretches the back muscles and makes the abdomen look slimmer. By applying appropriate pressure to the body with compression, it reduces muscle shaking. In other words, there is less unnecessary movement of the muscles. 【4-Way Stretch】Excellent 4-way stretch, a smooth, soft texture, and a lightweight feel that does not hinder any movement and does not cause stress. This is an undershirt that pursues the ultimate in wearability. 【All sports scenes, all-season対応】It can be used as wear for walking, jogging, baseball, and sports clubs, and as everyday wear for golf, skiing, soccer, and as innerwear for sun protection and cold protection.