Tweak nipple suckers, another unique design from the Merci collection, create powerful natural suction for authentic sensations and engorgement that traditional clips canft.t provide. With a simple squeeze, the Tweak set fits perfectly against the skin and creates a strong seal for hands-free fun—just attach to each nipple and watch them swell through the visually stimulating sheer material.Features Soft Material Forms Comfortable Seal Creates Intense Suction When Squeezed Designed for Hands-Free Wear Nipples Become Larger and More Sensitive Phthalate-Free, Body-Safe Approximate Product Dimensions:Total Length: 1.75 in. (4.4 cm)Width/Diameter: 1 in. (2.5 cm)Circumference: 4 in. (10.2 cm)