Silk is water based hybrid personal lubricant, and is Sliquid's Premium formulation. Starting with a super silky water base, and blended with 12% silicone, Sliquid Silk is all that a water based personal lubricant can be, with the added longevity of a silicone lubricant. Perfect for couples or for solo use, Silk is easy to clean up and has a luxurious creamy texture. All Sliquid products are formulated by sensible women, for sensitive women, and will never cause yeast infections or UTI's Sliquid Silk is available in a handy 4 oz size in a flip top bottle with a flat bottom to avoid spills.