Plug your butt ’til you bust your nut with ERGO, the pure silicone ergonomic butt plug from OXBALLS.ERGO is a smooth silicone butt plug with a flared base and ergonomic kidney-shaped design. The soft silicone flanges at the base keep ERGO securely snug between your sweaty cheeks for an all day stretch your piggy pucker won’t forget. ERGO also comes in an array of colors to mix n’ match with your favorite gear or dungeon decor…or go old school with our more traditional BLACK ERGO butt plug, after all everyone looks good in black. Each unique ERGO BUTT PLUG is hand poured right here in our factory so no two plugs are alike. For an extra squishy alternative, try our super comfortable SOFT ERGO butt plug, it’s made from blubbery silicone that’s stretchy and soft to the touch.