Feel comfortable everywhere you swim! The extremely stretchy and stylish arena Openings Swim Jammers for boys fit like a second skin. Part of the comfortable arena Feel line, they are ideal for fitness and leisure swimmers doing any water activity at the pool, at the beach and in any other body of water. Made of chlorine and saltwater-resistant Waterfeel Eco fabric with integrated UPF 50+ UV protection, this 4-way stretch fabric ensures a great fit, maximum freedom of movement and outstanding comfort. It is the eco-friendly evolution of arena's Waterfeel fabric and is made with recycled polyamide. Equipped with an adjustable internal drawstring for an excellent fit and a soft front lining. Side length: 14.2 inches. The OEKO-TEX® STANDARD 100 of the fabric means that it has been tested for harmful substances, ensuring is harmless to human health and the environment.