Make a statement in Boom logo prints. Celebrating the Speedo brand, our sporty Hyperboom Muscleback swimsuit showcases our iconic Boom logo in a graduated version of our 'shattered' print design with striking shades of grey and black. The muscleback design and medium cut leg offer flexibility and freedom of movement, so you can swim in comfort. Designed to be durable and better for the environment, the suit features our new ECO Endurance fabric, which is 100% chlorine resistant, quick-drying and made from 50% recycled materials.