This TPE Stroker is designed with a ribbed structure canal that gets tighter the further you go in. Also its very stretchable but it remains firm irrespective your size. Because of the exterior it has an amazing grip that feels very comfortable in use and since its created out of flexible material you can simply squeeze it to increase pressure. All this together makes it the perfect masturbator to spice up your sex life.SpecificationsMaterial Soft TPEToy Length 150mm 5,9 InchToy Width 71mm 2,8 InchWaterproof YesPhthalate free Yes