The Vexing Penis Jewel by Master Series is designed to restrict and erotically tease. This premium sound is made of brushed stainless steel and is gently contoured with 4 smooth swells to increase the pleasure. Tapered at the end and weighted just right to add extra tension. The plug is attached to a small hinged ring, a connecting piece, which connects to the head ring. This dual hinged attachment makes it easier to use. Take it to the next level with a little temperature play...The Vexing Penis Jewel can be warmed by warm water or cooled in the refrigerator. Stainless Steel is: Non-porous, Hygienic, Easy to sterilize, Temperature resistant, Impact resistant, and has a long term value.