Elevate your training with iconic Speedo branding. Elevate your training with iconic Speedo branding. Bring a touch of Speedo heritage to the pool with the Splice Logo Muscleback, featuring an eye-catching splice of our Boom logo in bright pink. The muscleback design offers flexibility and freedom of movement so you can swim in comfort. 100% chlorine-resistant, our Endurance+ fabric is perfect for regular sessions in the pool.