100% elastomer masturbatory sleeve with delicious nubs on the inside for the ultimate in self-pleasuring. Pictured inside out to show texture, the sleeve is reversible for cleaning. Closed at one end for strong suction. Vibratex best selling male sleeve. Sidekick Sleeve #1 Blue Elastomer 100% elastomer masturbatory sleeve with delicious nubs on the inside for the ultimate in self-pleasuring. Closed at one end, which creates strong suction. Blue masturbation sleeve measures 5.5 inches long by 2 inches wide. Always clean before and after use. A water based lubricant is recommended. Sidekick Sleeve is a part of the Adventure Series from Vibratex.