EXTRA FIRM MATTRESSES
Most "firm" mattresses are really just medium-firm. Slecofom is built for the sleepers they forgot — reinforced pocket coils, foam-encased edges, and high-density support layers, engineered for real support with zero sag.
Every mattress ships free from our US fulfillment centers and comes with a 101-night sleep trial, free returns, and a 10-year warranty.
See How It's BuiltFree 2–4 business day delivery across the US.
Choose Slecofom
WHO IT'S FOR
Back & Stomach Sleepers — real support, no sinking
Heavier Sleepers — heavy-duty coils that hold up
Done With Sagging — firm edges, firm middle, year after year
Extra Firm, By Design
Four sides are wrapped with high density firm foam.
Reduce the edge collapse problem of Mattress In A Box
The luxurious combination of materials and design styles
All series Slecofom mattresses do not contain fiberglass
Slecofom mattresses are designed for sleepers who need genuinely firm support — shipped free from our US fulfillment centers in New Jersey, Texas, and California, and backed by a 101-night sleep trial, a 10-year warranty, and fiberglass-free materials.
Want to see what real customers say about sleeping on it?
Find out moreReal customers, real stories — see why they love their mattress.
Foam-encased edges hold firm — sit, sleep, or slide out of bed without sinking.
Extra firm doesn't mean hard as a board — support underneath, comfort on top.
From our US warehouse to your bedroom — setup in minutes, sleep on it tonight.
Real setups from the Slecofom community — from unboxing to the first night's sleep.
NEWS & GUIDES
We spend roughly one-third of our lives sleeping, yet most people overlook how much their mattress shapes their energy, mood, and mornings. If you regularly...
Most "firm" mattresses are actually medium-firm. Learn what extra firm really means, who it's built for, and how to tell the difference before you buy.
If you've ever bought a mattress labeled "firm" and spent the first night sinking into it, you've run into the industry's worst-kept secret: there is...
A：Yes. For floor use, please keep the room well ventilated to avoid moisture buildup at the bottom.
A：Absolutely. A mattress protector is highly recommended to keep the mattress clean, prevent stains and prolong its lifespan.
A：The removable cover (if applicable) can be spot cleaned with a damp cloth and mild detergent. Do not machine wash, bleach or soak the mattress core. Regularly rotate the mattress head-to-foot every 2–3 months to extend service life.
A：No. It works perfectly on platform beds, slatted frames, floor mats and standard box springs. Slatted frames need slats no more than 4 inches apart for better support.
A：Total thickness: 14 inch. Please check the size before purchasing.
A：We use recyclable cardboard and plastic film, eco-friendly and easy to dispose.
A: Standard delivery follows the carrier's rules. In most cases, packages are delivered to the building entrance or the door of your unit, depending on the carrier and building access. The compact box is lightweight and easy to carry, so moving it upstairs or into your apartment is simple. If you need special delivery arrangements, contact us at support@slecofom.com before placing your order.
A：Vacuum compression and rolling reduce volume greatly, which makes delivery easier, saves shipping cost, and helps you carry it into narrow hallways, stairs and small bedrooms easily.
A:
1.Primary Solution: When placing your order, please request adult signature confirmation for delivery.
2.If no signature confirmation was requested, the delivery status on the carrier’s website will be considered as proof of successful delivery.
3.If the carrier’s website confirms delivery but you did not receive the product, we can assist in filing a claim with the carrier. If the carrier admits the package is lost, you will receive a full refund. Otherwise, the order will be deemed successfully delivered.
A: Standard delivery follows the carrier's rules. In most cases, packages are delivered to the building entrance or the door of your unit, depending on the carrier and building access. The compact box is lightweight and easy to carry, so moving it inside is simple. If you need special delivery arrangements, contact us at support@slecofom.com before placing your order.
