LANKYZ liquid silicone nipsuckers suck the part you want sucked the most, your nip-nub the tip that part that has all the shivery throbby nerves.LANKYZ sucks that part most and has room to suck so deep.The suck-hole is about the size of a dime, so it fits over your nip but not the surrounding skin, with a flat rim that gives the best seal and longest sucking. Plus, it has massive depth: almost three inches!LANKYZ, for short play - enhance the nip-sensations. For nip-gainers seeking max length the inner tunnel flares wider as it gets deeper for more airspace around the nip. More Suction - More Pressure - More Pull.These are made of the best liquid silicone, it is the best stuff and the suckers have a glossy lush look and feel.Outer rimmer-rings along the length add to the suction but keep the walls thin with grippy nubblets at the tip for a bit of grip.