IMAK Universal Pil-O-Splint is an ideal night splint for isolating the wrist joint and positioning the hand and wrist in a comfortable position while sleeping. The Pil-O-Splint is made of soft, cushioned foam fabric which covers a semi-rigid sleeve with an ergoBead pad that is positioned between the palm and thumb which helps secure the splint in place. Splint also provides support for the arch of the hand.