It's stretchy and fits the body. This rash guard has a UV protection rate of 90% or more and is made of 88% polyester for a comfortable feel. - Brand: FILA - UV Protection: 90% or more - Material: 88% Polyester, 12% Polyurethane - Size: M Bust: 36cm (flat measurement) Length: 60cm (flat measurement) There is some fraying on the sleeves, but it doesn't affect wear, and the overall condition is good. Recommended for those who go to the gym or are looking for a replacement. It uses highly stretchable fabric that fits the body and is easy to move in. Stylish reflective material detail on the left wrist! Safe for night walks and training.