To use this swimsuit, simply put it on like you would any other one-piece. It's perfect for a day at the beach or by the pool. When it comes to maintenance, always hand wash it separately in cold water using a gentle detergent. Never use bleach as it can damage the fabric and fade the rainbow color. And don't put it in the tumble dryer, just let it air dry. For the best fit, refer to the sizing guide before purchasing.