Speedo Essentials – everything you needfor a great swim.Speedo Essentials – everything you needfor a great swim. Take on your training wearing the funky DiveThinstrap Muscleback from our much-loved Speedo Essentialsrange. Featuring an eye-catching dual-tone colourblock splicewith printed panel, the muscleback design with thin strapsoffers flexibility and freedom of movement. Our Endurance10fabric contains Creora HighClo, ensuring your suit will fit likenew for longer. Soft and stretchy, so you can enjoy your swimwithout feeling restricted.