Speedo Swimming Costume Women's Boom Logo Splice Muscleback Swimsuit- Size 12/34. Elevate your training with iconic Speedo branding. Bring a touch of Speedo heritage to the pool with the Splice Logo Muscleback, featuring a stylish splice of our Boom logo print. 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. Features & Benefits Muscleback design - offers flexibility and freedom of movement, so you can swim in comfort 100% Chlorine resistance - for long lasting performance Quick dry - dries faster after your swim workout