Speedo jammers speedo boys hyperboom splice jammer navy green junior training jammers built to last length after length. Designed for junior training, lessons, and active swims, the hyperboom splice jammer is part of speedo’s iconic hyperboom collection. Made from 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. Constructed from 100% recycled yarns, endurance pro delivers all the performance credentials of endurance with sustainability built in. Built for the pool. Built to last. Chlorine resistant pilling resistant four-way stretch upf 40 recycled fabric internal drawcord 3 key features endurance pro fabric endurance pro carries all the performance credentials of speedo’s renowned endurance fabric, constructed from 100% recycled yarns. Four-way stretch ensures freedom of movement through every stroke and turn. Chlorine and pilling resistance keep the jammer looking and performing like new for longer. Secure, comfortable fit an internal drawcord lets swimmers dial in the fit around the waist for a consistent, secure feel session after session. The v-cut front liner, made from 100% recycled polyester, adds modesty without restricting movement. At 36 cm in length, the jammer sits comfortably at mid-thigh for a classic training profile. Upf 40 sun protection the fabric carries a upf 40 rating, blocking the burn during outdo...