Exclusive Heirloom, two-sided slipcover designed to fit any Boppy Infant Feeding and Support Pillow (sold separately). The fashionable two-sided design features a luxuriously soft minky fabric with coordinating piping. SlideLine ring tracks which side baby fed from last. This ultra luxe slipcover keeps the Boppy pillow fresh. Zips on and off easily for machine washing. Moms have voted the Boppy Pillow the #1 Baby Product in America; make sure yours is always fresh and clean by having a few slipcovers on hand.?