The defining feature of  NAIPO oPillow Plus is the fact that it is wearable. The massage device with wireless charging capability is attached directly to the body. This leaves the wearers free to move around and use their hands while the massage nodes knead their back. The double-layered straps are made of a soft, breathable material. The straps are easy to adjust with Velcro fasteners and therefore suitable for most body shapes.