What give these powerful suction are the four springy rings that make the nipple-tube spring open without collapsing like old snakebite suckers– we made the walls thinner to allow for more pump and even larger sucked nips.
Made from their best-selling flexTPR, for amazing stretch and strength. Phthalate free.
Width: 1.25 – 1.5”
Outer circumference: 3.5 – 4.5”
Inner Circumference: 2.5”
Weight: .9 oz