Polyester Ergonomic wedge pillow for head and back support. Designed to provide gentle elevation and support, the Kolbs Wedge Pillow helps reduce discomfort from acid reflux, GERD, and post-surgery recovery while promoting better posture and breathing. Headboard pillow for elevation in comfort. Excellent wedge pillow for sleep apnea. Perfect headboard wedge pillow for sitting up in bed: Use it as a supportive headboard wedge while reading, watching TV, or working on your laptop in bed. The firm yet comfortable incline helps you sit upright without straining your neck or back.