Niagara is part of the Tantus dual density 02 line. With a super soft outer layer of silicone and dense inner layer the O2 Niagara's contour delivers intense stimulation, combined with the 02's dual density firm core it provides sensational pleasure with each thrust. 100% silicone that is not tacky and it doesn't need power. Hypoallergenic, boilable, bleachable and dishwasher safe. Never use silicone lubricant on an O2 product. 1.4"x7.65"

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