Tweak Nipple Sucker, another design from the KINK collection by Doc Johnson, creates authentic sensations and a swelling effect with a powerful natural suction that traditional clamps cannot provide. By simply squeezing, the Tweak set fits perfectly on your skin and creates a strong all-around seal for hands-free fun – just attach it over each nipple and watch them swell through the visually stimulating pure black material. KINK by Doc Johnson is developed in an exciting collaboration with KINK.com to create a collection of high-quality, authentic fetish items suitable for both long-term practitioners and newcomers.