Regardless of whether you know how to swim, or at the learning stage, I hope everyone remembers to take more time to exercise when putting on this T-shirt, and always remind yourself of the importance of exercise! ➤ American GILDAN pure cotton material ➤ The T-shirt is loose-fitting for men's clothing. The model in the picture is wearing size XS ➤ This model is available in five sizes, XS and XL, and the quantity is very limited. Please pay attention to the size or check before placing an order! [T-shirt care instructions] Put it on and wash it in the washing machine. It is normal for a slight shrinkage effect after the first wash.