Elong nip-suckers work. they really do suck and look so cool. They are slightly curved but not tapered. these will suck any size nips and are deep enough and big enough for small to medium piercings. These suckers stay on. The base flares out for more contact with skin for easy seal. Made from our best selling Flex Thermoplastic Rubber TPR for amazing stretch and strength. Phthalate free. Width 1.25 to 1.5. Height 2 . Depth 1. Outer circumference 3.5 to 4.5 Inner circumference 2.5 . Color Cobalt Blue.