Thighs Relaxed, Comfort Maxed: This donut pillow for tailbone pain is designed with an ergonomic thigh relief slope in the front that aligns with your thighs‘ contour. Widened Cutout and Contoured Support for Maximum Relief: This donut pillow features an ergonomically widened U-shaped cutout (4.5″L x 2.7″W) to reduce pressure on the tailbone, hemorrhoids, and sensitive areas, alleviating sitting pain and discomfort.