This sleeve is made from TPE. Usage & time will wear down the sleeve causing discoloration and disfiguration, as well as compromise the integrity of the sleeve. To make sure you get the most out of your product, make sure to get a replacement. Sam’s sleeve will bring back the power to your device. The new sleeve will feel just like when you first tried Sam Neo, revitalizing the intense suction sensation you know and love. Use the Sam Neo sleeve with the device or on its own, pleasure is in your hands.