The Revolution is the largest toy in the Tantus dual density O2 line. With a super soft outer layer of silicone and dense inner layer, the Revolution is
designed to deliver maximum satisfaction through a realistically
familiar feel. Close your eyes and you won't know the difference!
silicone that is not tacky and it doesn't need power. Hypoallergenic,
hygienic, boilable, bleachable and dishwasher safe.