Size Matters See-thru Nipple Boosters Flesh it has a water base

it has a water base that makes it compatible with all toy types and citric acid that cuts through lube and fluids

also included

The red side is slick leather

ergonomic wooden handle makes this slapper satisfying to hold and swing while the supple PU leather strap delivers just the right amount of sting for your partner to enjoy

for ease of cleaning

Size Matters See-thru Nipple Boosters Flesh it has a water baseSuction and increased blood flow to the nipples can increase sensitivity and improve circulation. The Size Matters See Tru Nipple Boosters enlarge and stimulate using gentle suction. Simply place them over the nipple and squeeze the bulb to create a mild yet effective vacuum. Once you let go, these fun nipple toys will stay in place on their own. With the see through chamber, you get to watch all the action as you play! Measurements: 2. 5 inches in