Our new Solid Boom Jammer is built for training and active swim sessions. Made from Endurance Pro fabric with four-way stretch. it resists chlorine and pilling for lasting comfort and durability. A full elastic waistband with internal drawstring delivers active comfort. while bonded hems ensure a distraction-free fit. The design includes a side zipper pocket and UPF40+. Body made of 57% polyester. 43% polyester PBT.