Atomic Jock Do-Nut 2 Cock Ring The Do-Nut 2 Cock Ring stretches to 5x its size but snaps back to its original shape.   Made from Skin-Flex TPR (a silicone/TPR blend) these are super stretchy, rubbery and most importantly- strong. You can have fuller, firmer erections for better sex.  Not only that, Do-Nut 2 h elps control premature ejaculation. Plump up your meatour with this fat and strong jelly ring. Your choice of black, blue or clear. Listing and template services provided by inkFrog