Scrunch bottom swimwear, or also called pucker back, scrunchie bottom swimwear, scrunch butt bikinis, etc.. are designed to make your backside (butt) look more enhanced than the classic swimwear bottoms that may give some wearers a kind of saggy bottom or flat butt look.
Scrunch butt bikinis are sewn down the center of the back with an elastic band to give you a cheeky, sexy, muscle toned look for your bottom.