Oxballs Bubbles Nipsuckers Silicone BlackNipsuckers bloat up your nips making them more sensitive, bigger, and more throbby. Our suckers are made of Liquid Platinum Silicone because it's the best material out there, they won't crack, they have the right amount of pull and are rubbery soft enough to really seal to your nip. Best of all, they never lose their suction, nipsuckers that don't suck are just sad. BUBBLES nipsuckers are the right size and depth to pull nips out to rubbery points,