PREFERRED BY PROS: Adjustable height, dual-core foam, & back support aid in breastfeeding success BREAST OR BOTTLE: Large design comfortably supports feeding twin preemies up to 1+ year old IDEAL SUPPORT: Firm back pillow, wrap-around design & adjustable buckle system for XS to plus size VERSATILE: Two independent pillows adjust for lounging, tummy time, adult massage table & lap pillow