Hot ice silk cotton crew-neck T-shirts in summer,made of polyester fiber and spandex and other materials, not only to ensure the elasticity and durability of clothing, but also bring a cool touch, so that sports in the hot summer can also keep fresh. Polyester is a synthetic fiber that has good wear resistance, wrinkle resistance and elasticity, allowing T-shirts to remain as good as new after many wears and washes. The addition of spandex further enhances the elasticity of clothing, so that athletes can freely stretch and not be bound when carrying out high-intensity sports such as running and fitness.1 location includes the shipping cost to US. Orders of 300 pieces or greater are eligible for sea shipping. 100% guarantee for quality. Rush Service.