Orders placed after 12:00pm will be shipped the next business day.
Mattress Safe® Stretch Knit Box Spring Encasement with the patented “Zipper with the Hook”®. A sewn in loop and zip-tie is included to ensure tamperproof encasements. Color encasements are made at the time of order. Please allow 10 – 15 days for production.
- Bed Bug Certified
- Fire Retardant: CFR Title 16 Part 1632
- Impermeable to Bed Bugs and Dust Mites
- Patented "Zipper with the Hook"®
- Plus+ Advantage Sizes
- Single and "Split" Box Spring Sizes (see chart below)
- Comes with Felt Corner Protectors
- For additional protection, use the
Felt Full Frame Box Spring Encasement Protectors
- Made In USA
Do You Have A "Split" Box Spring?
Before ordering your box spring encasement, make sure your mattress has a single or a "split" box spring set. If you have a King or Queen mattress, use the table below to order the proper box spring encasement for your box spring configuration.
Single Box Spring
Split Box Spring Set
Plus+ Advantage® Sizes
Plus+ Advantage® sizes stretch to fit a variety of mattress depths and lengths, including regular and long sizes. Plus+ Advantage® brings you the versatile answer to mattress and box spring protection.
- The Twin Plus+ Mattress Encasement stretches to fit Twin and Long Twin.
- The Full Plus+ Mattress Encasement stretches to fit Full and Long Full.
- The King Plus+ Mattress Encasement stretches to fit California King and Hotel King.
How To Measure Your Mattress Correctly
It is important to properly measure your mattress and box spring frame before purchasing an encasement. Due to hygiene and bed bug concerns, we are unable to accept exchanges and returns on opened or used products. For more information, please review our return policy.Learn How To Measure Your Mattress
Mattress Safe® Quality You Can Trust... Service You Deserve®
Mattress Safe® Product Features | Video (1:52)
The Mattress Safe® product collection includes quality mattress and box spring encasements and protectors for any bed in your home. Featuring our soft luxurious fabric, Mattress Safe® encasements are bed bug certified to protect against bed bugs. Mattress Safe® products are waterproof, breathable, fire retardant, and soft to the touch.
Easy Care and Installation Instructions | Video (0:56)
Products by Mattress Safe® are used daily around the world for bed bug protection, allergy relief and waterproof protection. Mattress Safe® products are handmade of long-lasting materials that stretch to fit. Our products are specially designed for ease of installation. Installation instructions are provided with each product.
Why Mattress Safe® Is Bed Bug Certified | Video (1:13)
Mattress Safe® mattress protectors and encasements are your first line of defense against bed bugs, fluids, stains, bacteria and mold. Mattress Safe® encasements are the only products on the market that are bed bug certified. Don't settle for lesser encasements that claim "bed bug protection". Get the proven gold standard: Mattress Safe® Bed Bug Certified.