Instant purchase is OK. This item is made with a cool-to-the-touch material and features sweat stain resistance. The cotton is organic cotton. 【Material】 The fabric is treated to prevent sweat stains from appearing on the surface. It utilizes the natural texture of cotton while providing a cool and comfortable feel when worn. It is a blend of cotton and polyurethane, offering elasticity. 【Design】 The stretchy material is used to create a compact fit. The design pays attention to detail, such as the width of the collar and the length of the sleeves, so it won't be visible as an inner layer. 【Specifications】 Transparency: Slightly sheer Elasticity: Yes Fit: Slightly slim