Raycop RN has an excellent ergonomic design, in particular the weight of the vacuum cleaner is well balanced so that it sticks to the surface of the mattress. Excellent quality product, easy to set up and easy to store. My children are very sensitive to dust mites, I have used the Raycop RN on her bed several times and I get results immediately, she sleeps much better now. Unlike other types of vacuums, Raycop is designed for your bed. UV light and strong vacuum suction can quickly remove all kinds of bacteria and dust, the more you use it, the better it will be.