specification: _x000D_Item Type: Arm Massager_x000D_Material: ABS_x000D_Applicable Parts: Arm_x000D__x000D_Instructions for Use:_x000D_1. Hold the handle, hold the arm with the four-strand roller, and roll up and down to massage; hold the handle of the roller slightly harder to enhance the massage effect._x000D_2. It is especially suitable for adding lubricating oil or body shaping cream in the bath. The faster the rolling speed, the faster the use effect._x000D_3. It is advisable to massage for about 20 minutes at a time. Features: 1Double Y shape, multiple concave and convex balls squeeze and massage back and forth to achieve the effect of slender arms. 2Can be matched with lubricating oil or body shaping cream when bathing, massage to make you feel comfortable. 3Angle adjustment design, very humanized, convenient for use. Conform to ergonomic design, fit your arm, simple operation. 4Made of high quality ABS material, safe and non?toxic, sturdy and durable for long term use. 5Stimulate acupuncture points in the arm, dredge the meridians. Light weight and portable, easy to carry. PackageList: 1 x Arm Massager