Nike Men's Small Core Contend Volley Swim Trunks Green Shorts NWT The Nike Men's Small Core Contend Volley Swim Trunks in green feature a colorblock pattern and are made of 100% polyester material with a mesh lining. These swim shorts have a trunk style design and are machine washable for easy care. They come in a size S and include pockets for added convenience. Perfect for recreational activities, these swim trunks by Nike are a stylish and functional choice for any man's swimwear collection.