Material:stainless steel/TPU/nylon/PVC Style A and Style E both use waterproof material TPU as elastic band,no sponge wrapped metal pipe,it can be used in wet place such as bathroom. Please note that the dildo on the profile picture is not included,because if package contains dildo make it become sex toy goods,(without dildo,it is just a common furniture)this would cause more difficulty for shipping and passing the customs. Any sucker dildo can be used on the base,so you can easily get a perfect dildo locally. But if you really want one dildo to ship with it together,this would cost a little extra,just contact me and there is 3 sizes dildos optional. S-180mm*37mm/M-190mm*43mm/L-200mm*43mm The dildo base only can be used on style A and style E. Feature The sex furniture for couples---Soft elastic band which let you no longer feel the cold of metallic, Height is adjustable The sex furniture chair---The Bearing weight up to 150kg. Both of you can challenge the sex position that you ever dreamed of to reach orgasm The adult sex toy---Riding position design, help woman freely control her rhythm of sex (up and down, front and back, left and right, spinning, speed and strength) to find most exciting G-spot and stimulate The sex chair---Save your effort, avoid interruptions such as sore, numbness and tired when you enjoy yourself