NUTTER is made from FLEX-TPR so its thick and blubbery but squishy enough to mold n' stretch to the shape of your sack. NUTTER holds tightly to your junk like a second skineven when youre pounding a beefy bubble butt or jerkin' your greased up meat. The bottom of each nut has a drain hole for your sack sweat which also doubles as an opening for electrodes.