What are you trying to fix or fit?
Start with your bed’s measurements. We’ll compare the sheets, protectors or toppers in our researched catalog and explain what fits—and what needs another check.
Your measurements stay in this tab. Want to come back later? Choose “Save on this device” when you’re ready.
Pocket depth versus mattress-fit range
Measure the width, length and finished height of everything the covering must enclose. If a protector sits below the topper, its covered height differs from the sheet’s. A fitted protector is not a six-sided zipped encasement.
Worked example: a 13-inch mattress plus 2-inch topper measures 15 inches before any measurable added height. If the finished stack measures 15.5 inches, use 15.5 directly. Brooklinen’s Classic Percale size guide gives a 16-inch mattress-fit maximum: 15.5 is below it. Choosing a 1-inch personal margin would exceed the remaining half inch, but does not make the manufacturer rating fail.
Do not assume a universal half-inch protector allowance or two-inch extra pocket rule. Avocado’s standard protector lists a 15-inch product profile but a 6–16 inch mattress-fit range. Construction and stretch explain why a product dimension and a fit rating are different facts.
Before a purchase, recheck the exact model, size and pocket version. Confirm care instructions and the actual seller’s return terms, including opened bedding. Direct-brand terms do not automatically apply to another retailer.
See the manufacturer dimensions and fit ranges →
Read the compatibility methodology · Report a specification correction