Nutter Sack Ball- Bag and Penissling - BlackNUTTER 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.