Speedo Hyperboom Splice Mid Jammer Men's (Navy Blue) The shorter-length Hyperboom Splice Mid-Jammer is part of our iconic Hyperboom collection. Designed for active swims using Endurance Pro fabric with four-way stretch, it resists chlorine and pilling for lasting comfort and durability. The design includes a front modesty panel liner and an internal drawcord for a secure fit. Body made of 57% recycled polyester, 43% recycled polyester PBT. Chlorine Resistant - Resists chlorine for long-lasting fabric performance Pilling Resistant - Fabric resists pilling for lasting durability Front Modesty Panel Liner - Lined at the front for comfort and modesty Internal Drawcord - Inside drawcord for a secure, adjustable fit Endurance Pro - All the performance credentials of Endurance+, constructed from 100% recycled yarns. Four-way stretch fabric designed for durability with chlorine and pilling resistance. Body made of 57% recycled polyester, 43% recycled PBT Sized by waist 32"-34-36-38"