Z Gel-Infused Memory Foam Wedge Pillow - Therapeutic Bed Wedge with Removable Rayon from Bamboo Cover Wedge pillow features 1 inch top layer of GEL DOUGH memory foam for pressure-relieving comfort on top of supportive high density base foam for an ideal combination of softness, support and temperature control GEL DOUGH memory foam top layer is a comfortable blend of foam fused with gel beads that capture and distribute heat for a better sleep temperature Wedge shaped pillow can be used as a supportive back rest or to incline the head and neck to help relieve heartburn, acid reflux, sinus pressure and congestion Ultra-soft rayon from bamboo velour cover can be removed and machine washed Pillow measures 29" x 29" x 10"; 5-year U.S. warranty