Speedo essentials – everything your child needs for a great swim. take on lessons and training wearing the funky dive jammer from our much-loved essentials range. sporty with an eye-catching dual-colour panel chevron design, the jammer is lined at the front for comfort and includes an internal drawcord so that young swimmers can adjust the fit. quick-drying and stretchy to keep active kids comfortable, it offers higher chlorine resistance than standard swimwear fabrics and is made from endurance10 fabric which is designed to keep its shape.