The covers are made to fit any standard size boppy pillow. Cover Boppy Pillow with zipper for easy on/off for washing. This listing is for the cover only, boppy pillow not included. Cover Boppy breastfeeding pillow. Handmade boppy cover is sewn in single copies by hand with the greatest care and made from fabrics of the highest quality. One side is made from high quality cotton material, other side is from Minky, perfectly soft and in beautiful vivid colours. Pillow cover with piping and a hidden zipper.