The Speedo Solar 1 Inch Brief 7300165 is an outstanding swim brief that is a staple of swim competitions the world over. Speedo's Solar 1 Inch Brief is made of polyamide and Xtra Life Lycra, which increases the durability of the swimsuit so it will last longer than average spandex. This is what you think of when you think of Speedo. It's a design and level of performance without equal. The soft fabric has a comfortable, irritation-free texture that doesn't feel too slick, and is made with Xtra Life Lycra that extends the life of the fabric from 5 to 10 times the average.