Known by many names, but nonetheless, this pair of Eco Endurance triangular swim trunks has quickly become one of our most popular swim trunks for men. Made from Speedo's unique signature material Endurance Eco, which consists of 100% polyester (55% of which is from recycled plastic bottles), you get the only available pair of briefs in sustainable materials that are also ultra-chlorine-resistant. The design is kept simple and stylish with a side length of 7 cm, here in the color black. With these Eco Endurance triangular swim trunks, you can never go wrong – whether you are 15 or 45 years old, briefs are definitely back in style. They are used by many swimmers for lane swimming in the pool, but also on the beach. Besides the undeniably great look they provide, they also offer the significant advantage of giving you full freedom of movement and comfort. Something every man or young boy appreciates. Unlike all other triangular swim trunks on the market, these are made from 55% recycled plastic bottles, which have been transformed into a strong polyester thread. This also gives a good feeling for the body – and for the environment. What's not to like?