With its new Self Lubrication Technology (SLT) this vaginal masturbator is always ready. No lubricant is needed. Just add a little water or saliva on the inside. The SLT makes a quick and smooth penetration more than pleasurable. After use just wash preferably with toy-cleaner. The SLT will last for about 30 times. After that the toy can be used by adding some lube manually. Waterproof. Measures 3.94 in. by 9.45 in.