K-Y® Brand Ultragel® Personal Lubricant. Unique water-based liquid gel. Not too thick or too thin. Smooth. #1 doctor recommended brand. 4.5 fl oz (133 ml). A water-based liquid gel formula that is not sticky or greasy and easily washes off. Non-staining. Questions 1-877-KYBRAND; Outside US, dial collect 215-273-8755. Bottle shape and cross silken design are trademarks of McNEIL-PPC, Inc. ©McNEIL-PPC, Inc. 2013.