How to Pick a Replacement Cover That Fits Your Orthopedic Bed (2026)

How to Choose the Right Product

How to Choose the Right Replacement Cover

Fixing a bunching cover starts with three measurements: length, width and thickness. Measure the foam with a tape measure while it’s flat on a firm surface. Record the maximum width and length and the foam thickness at the edges and center; many foams taper slightly. For crate beds, measure the interior crate dimensions and compare to the pad size—choose a cover that matches the pad size exactly rather than the crate size to avoid loose fabric. Allow for zipper seam allowance: some replacement covers list an “outer” dimension that includes seam allowances—ask or check product details.

Zipper type matters. A full wrap-around or L-shaped zipper that opens wide makes it much easier to get the foam into the cover and to close it without tugging. Internal zipper encasements (a separate inner waterproof case) are the most reliable at preventing foam shift: they lock the insert in place and let the external cover sit snugly. Look for strong, long zippers with overlapping flaps or locking sliders to prevent the zipper from working open under pressure.

Fabric stretch and shrinkage are the next big culprits. Fleece, velour and suede have low-to-moderate stretch; denim and heavy canvas have very little. If you pick a stretchy fabric, you risk a saggy surface after repeated washing—if you pick a stiff fabric that’s a hair too small, you may never be able to zip it closed. When in doubt, pick a non-stretch cover sized to the exact dimensions or choose a product with an inner waterproof liner so the outer layer can be swapped without exposing the foam.

Other features to check: non-skid bottoms to keep the bed from sliding (sliding creates bunching), reinforced seams and double stitching for durability, and included spare covers so you can always maintain a snug top layer while washing. Also note laundry care—high heat can shrink some fabrics. If your dog tends to dig or chew, choose heavier-duty fabrics (denim or canvas) and thicker zippers.

Budget Tiers

Budget: Expect basic removable covers and often a waterproof liner; good for owners who want a low-cost replacement and rotation options. Mid-range: Better fabrics (plush fleece, durable zippers) and non-slip bottoms—good balance of comfort and fit. Premium: Heavyweight external covers, internal waterproof zip encasements, and bonus spare covers—best for preventing bunching long-term and for multi-pet or high-use situations.