Nip suckers bloat up your nips making them more sensitive, bigger, and more "throbby." These 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... nip suckers that don't suck are just sad.
BUBBLES nip suckers are the right size and depth to pull your nips out to rubbery points, sucking the tips mostly - that's the part with all the nerves that make your toes curl when tugged and twisted. The cool thing about these is the feel... BUBBLES are rubbery and fleshy-soft, not plastic.
Nip sucker pro tip: for max suction, before squeezing the air out of the suckers, wet the rim with spit, water-based lube, or a waxy lip balm - you will get a better seal around the nip... hairy chested or smooth.