The snap-away replacement liner attaches beneath the sheer window of the Hang2It shower curtain. It is 100% effective in keeping the water inside the bathtub when installed and used as instructed. This replacement liner is very easy to install, taking seconds to install and remove before washing. The snap away liner is made of the highest quality 100% polyester fabric that provides a soft feel to the hand and is machine washable, so it can stand the test of time. The liner also includes magnets at the bottom of the liner, to add additional weight to keep the liner inside the tub.