8 Best Mattress Encasements for Bed Bugs of 2026

AllerZip is our top pick because it covers every point a bed bug encasement has to get right. Protect-A-Bed lists it as bed bug proof on all six sides, with entry, escape and bite protection sealed by its patented Bug Lock zip closure, which the company describes as bed bug and dust mite proof. Protect-A-Bed pairs that seal with a 100% waterproof LiquiDry layer, FUZE antimicrobial technology and a moisture-wicking surface, so it also works as an everyday waterproof protector for kids, pets or spills. The listed depth range of 6 to 18 inches covers most pillow top and hybrid mattresses. It was listed at $79.99 on Protect-A-Bed's US store when we checked, with 100-night returns and free shipping over $99. We compared documented features and published prices and did not test it in a lab. Pair it with the matching box spring encasement if your bed has one.

SureGuard is the closest rival to our top pick and the better choice when depth matters. Instead of one stretch size, each bed size comes in four depth ranges, from 6 to 8 inches up to 17 to 20 inches, so a tall hybrid or pillow top can get a tight fit without strain on the zipper. SureGuard says its super fine zipper with Invisi-Zip and SureSeal technology seals the mattress off from bed bugs, and that the bite-proof membrane also keeps bugs already inside from escaping. The top is 100% cotton terry over TPU backing on all six sides, and the brand lists the cover as independently lab tested and GREENGUARD Gold certified. A queen in the 13 to 16 inch depth was $64.97 on sale when we checked, down from $99.95, with free shipping and a 10-year free replacement warranty. SureGuard advises keeping the mattress sealed for at least a year in a bed bug case.

The Essential encasement is the sensible Protect-A-Bed choice for thinner mattresses. It shares the six-sided, zip-around design and patented Bug Lock closure that the company rates as bite, entry and escape proof, so the bed bug barrier is the core of the product rather than an add-on. What you give up against AllerZip is depth: Protect-A-Bed lists it for mattresses 6 to 11 inches deep, against 6 to 18 inches for AllerZip. For a dorm twin, a guest bed, a bunk or a basic innerspring in a rental, that is a fair trade. It was listed at $64.99 when we checked, and the matching Essential Box Spring Encasement was $59.99, which makes a full bed set easy to buy in one order. Returns run 100 nights, and shipping is free over $99.

Linenspa's Premium Encasement is the budget answer for anyone who needs a zippered cover quickly. A twin was $24.99 when we checked, a fraction of the price of the certified picks, and Linenspa ships it free in 1 to 3 business days. The cover is a smooth 100% polyester surface with a 100% polyurethane waterproof backing on the top, sides and bottom, and the zipper fully encloses the mattress. Linenspa says this keeps the mattress safe from bed bugs, liquids, allergens and dust mites, and that the backing is quiet and does not change how the bed feels. It carries a 10-year limited warranty and is HSA/FSA eligible. The limits are real, though: the page cites no lab certification for bed bugs, describes no locking zipper, and gives two different maximum depths, 12 and 14 inches. Treat it as a preventive barrier for a rental or a guest bed rather than the main tool after an infestation.

Mattress Safe builds the Sofcover Ultimate for the worst case. Its patented Zipper with the Hook closes into a hook at the end of the track, and the company includes a sewn-in loop and a zip-tie so the zipper cannot slide open, which matters when you are trying to starve bugs that are already inside the mattress. Mattress Safe lists the cover as certified to protect against bed bugs, impermeable to bed bugs, dust mites and bacteria, and waterproof and breathable on all sides. It also meets the CFR Title 16 Part 1632 fire retardant standard and is made in the USA. Plus+ sizes stretch across regular and long lengths, and depths run from 5 to 9 inches up to 16 to 22 inches. A twin in the shallowest depth was $91.97 when we checked. The catch is the return policy: Mattress Safe cannot accept returns or exchanges on opened or used products, so measure carefully.

Purecare's OmniGuard Advance encasement is the premium, low-bulk option. It wraps all six sides of the mattress with a locking zippered enclosure, and Purecare describes it as a barrier against bed bugs, dust mites, allergens, moisture, mold, mildew and stains. The OmniGuard Advance fabric is lightweight and whisper quiet, so the encasement sits under the fitted sheet without much change in feel, which suits hot sleepers who dislike thicker terry covers. Purecare treats its premium protectors with an antimicrobial silver finish and says the encasement can be washed and dried hot, which is useful after travel or a suspected exposure. A twin was $144.99 when we checked, with free ground shipping and a 30-day comfort trial. That is a high price for a bed bug cover, and the product page does not cite a bed bug lab certification, so value scores lower than the certified picks.

Hospitology is a bedding maker that sells its encasements through Amazon rather than its own checkout. Its shop page lists the mattress encasement as waterproof and bed bug proof in sizes from twin to California king, including Full XL, and sized for mattresses 10 to 18 inches thick. That range suits most modern hybrids and pillow tops but leaves out thin dorm or bunk mattresses. Hospitology also lists matching bed bug proof box spring encasements for 7 to 10 inch box springs and waterproof pillow encasements, so you can seal the whole bed from one brand. The company describes its encasements as lab tested and says they are part of fighting an infestation. We could not confirm a current price because the vendor page links out to Amazon without listing one, so pricing is marked pending and value is scored conservatively. Check the Amazon listing for the closure details and current price before you buy.

Purecare's Refreshing encasement pairs the same six-sided, locking zipper format as the OmniGuard Advance with a TENCEL Lyocell surface. Purecare says the lyocell fibers wick moisture and feel cool to the touch, and that the underlying performance fabric acts as a physical barrier against bed bugs, dust mites and allergens while also shielding against stains, moisture, mold and mildew. The result is the softest feel on this list, closer to a sheet than to a plastic-backed cover. It has a 30-day comfort trial, free ground shipping and a warranty Purecare lists as up to 10 years or more. A twin was $149.99 when we checked, the highest price we confirmed, and split king beds come with two covers. Care is wash and dry warm. Like its sibling, the product page does not cite a bed bug lab certification, so it ranks below the certified picks on value.