The ERGO VE 100 pillow is made from open cell “viscoelastic” polyurethane foam designed specifically to limit excess heat build-up. The pillow is available in three thicknesses of 9/11/13 cm to respond to different sleeping positions and guarantee correct support to the lower neck in any position. The pillow is protected by a 100% Cotton Jersey cover. The ERGO VE 100 pillow is a Class 1 Medical device.