Dimension One Spas @Home Half Moon NeckFlex Pillow - Silver, Replacement Hot Tub Pillow 01510-0593G Authentic replacement D1 Spa @Home Hot Tub pillow is half moon shaped allowing for maximum comfort while relaxing in you hot tub. Used on @Home Spas from 2006 - 2012 Includes 2 mounting pins on back of pillow make for easy installation