Flesh Tunnel. White Silicone Flesh Tunnel. 14mm - 50mm gauge (US 9/16” - 2”approx). Double flared easy fit flexible tunnel. Made from high quality bio-grade silicone. Silicone flesh tunnels are light weight and comfortable to wear. For use in the Stretched Ear Piercing. For help with sizing please read our Sizing Guide below. Silicone Flesh Tunnel.