Speedo jammers speedo mens hyperboom splice jammer anthracite hyper teal training jammers built to last, session after session. Our new solid splice jammer is ideal for training and active swims. Made from endurance pro fabric with four-way stretch, it resists chlorine and pilling for lasting comfort and durability. The jammer provides a streamlined profile and features a front modesty panel liner and an internal drawcord for a secure fit. Built for the long haul, lane after lane. Endurance pro fabric chlorine resistant four-way stretch internal drawcord pilling resistant upf 40 3 key features endurance pro fabric the endurance pro construction uses a 57% polyester, 43% polyester pbt blend designed to hold its shape and colour through heavy pool use. Four-way stretch moves with your body rather than against it, keeping you comfortable across long training blocks. Resistance to both chlorine and pilling means the fabric stays looking and feeling fresh far longer than standard polyester. Secure, streamlined fit an internal drawcord lets you dial in the waistband exactly where you need it, eliminating any risk of slipping mid-session. The front modesty panel liner adds an extra layer of coverage and confidence during training. Together these details give the jammer a clean, streamlined profile that stays put from warm-up to final rep. Sun protection built in a upf 40 rating means the fabric blocks the vast majority of uv radiation, useful for outdoor pool sessions or open-ai...