TPR, moulded as a vagina. It stretches to fit and holds pressure as it does, which is the mechanism behind sleeves of this kind. Hand-driven, with the texture doing the work rather than a motor. Small enough to store without needing a plan for where to put it.
TPR takes water-based lubricant and nothing else; oil-based and silicone-based formulas break it down.
Warm water with a little neutral soap, then a thorough dry, is the whole of it.





































