Sackjack Wearable Jackoff Sheath Clear Frost from Oxballs. They took the best selling Sacksling design and made it into a super fleshy jerk off sleeve, introducing the Sackjack. Sackjack is a dual ball sling and jerk off toy made from signature Flex-TPR so it is super blubbery and soft to the touch melds to your junk just right to feel like you are jerking off your second skin. Sackjacks shaft is lined with nubs and ridges that feel amazing slurping and sliding on your slicked up meat. The opening on the end means you can even piss with it on. Best of all, Sackjack looks nasty as gripping your goods and milking your meat. The steel silver color lets you see your swollen hog while you work out that thick, creamy load