Material:stainless steel/TPU/nylon/PVC Style A weight:1.9kg Style E weight:2.25kg Style A/E use waterproof material TPU as elastic band,no sponge wrapped metal pipe,it can be used in wet place such as bathroom. Feature The sex furniture for couples---elastic band which let you no longer feel the cold of metallic, Height is adjustable The sex furniture chair---The recommended Bearing weight up to 90kg. 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