Therapedic TheraLuxe HD Jackson Firm
The no-nonsense firm mattress in the TheraLuxe HD lineup
The Therapedic TheraLuxe HD Jackson Firm is the firmest, most straightforward model in the TheraLuxe HD lineup. It is built for customers who want heavy-duty support, a firmer surface, stronger edge support, and better durability than a standard mattress.
This is not the softest bed in the store, and it is not trying to be. The Jackson exists for people who are tired of mattresses breaking down, sagging, hammocking, or feeling weak under them.
Comfort and feel
The Jackson has a firm, flatter feel with just enough cushioning to keep it usable. It does not have a deep pillowtop or plush surface. Instead, it gives you a stable, supportive sleep surface with minimal sink.
That makes it a strong option for back sleepers, stomach sleepers, larger sleepers, and anyone who knows they prefer firm support.
Best for
- Back sleepers
- Stomach sleepers
- Larger or heavier sleepers
- Firm-bed shoppers
- Customers who sit or sleep near the edge of the bed
- People who have been disappointed by mattresses that softened too quickly
- Shoppers who want heavy-duty construction at the lowest HD price point
Heavy-duty construction
The Jackson is built with the TheraLuxe QLX® HD wrapped coil unit by Leggett & Platt. This is a high-count, heavy-duty pocketed spring system using 17-gauge Quantum encased coils. In queen size, the unit contains 1,872 coils.
Above the coils, the Jackson uses 3 inches total of high-density polyurethane comfort foam: approximately 1 inch of 2.1 lb foam in the quilt and 2 inches of 3.0 lb TheraFoam™ underneath. These foams are denser than the foams commonly found in many standard mattresses, which helps the mattress resist early softening and body impressions.
Edge support
The Jackson uses TheraEdge™ foam encasement around the perimeter of the mattress. The current product page lists 3 inches of 50-lb density compression foam around the spring unit, plus extra heavy-duty base foam bonded to the encasement for added stability.
That edge system helps the mattress feel more stable when sitting on the side of the bed and gives more usable sleeping surface from side to side.
Important details
- Firm tight-top HD feel
- Approximate 11.5-inch profile
- TheraSafe™ fire barrier
- 1″ Superior High-Density polyurethane foam (2.1lb)
- 2″ TheraFoam™ comfort layer (3.0 lb)
- QLX® HD 17-gauge wrapped coil system (1,872 coils in queen)
- 3″, 50lb compression TheraEdge™ reinforced foam encasement
- Adjustable-base compatible
- Built in Rock Island, Illinois
- 20-year non-prorated warranty when sold under TheraLuxe HD standards
Our final take
The Jackson is the HD bed for someone who wants firm, strong, and practical. It gives customers the core benefits of the TheraLuxe HD line — stronger coils, denser foams, better edge support, and a serious warranty — without moving into the more expensive ICE models.
A Mattress Collection Built. To. Last.
Every day we listen to customers tell us the same story: appliances that fail after a few years, furniture that sags too soon, and mattresses that simply can’t keep up. A bed shouldn’t be one of the “disposable” items in your home. At Mattress Mart, we believe your mattress should be a durable investment in your sleep, not a short-term purchase you’re forced to replace before its time.
That’s why we proudly feature the TheraLuxe HD line by Therapedic—a collection built from the ground up for long-lasting support, exceptional durability, and real-world performance at an outstanding value. These mattresses use higher-density foams and a stronger, heavy-duty spring system than most beds on the market, so they hold their shape night after night, even for the largest sleepers and the most demanding households. They’re backed by one of the industry’s strongest warranty programs, reflecting the confidence Therapedic has in the materials and construction.
To complete the system, you can pair your TheraLuxe HD mattress with an adjustable base or with the Therability™ Heavy Duty wooden foundation, which features 20 cross-slats, 2×4 bracing, and a 105-lb build weight in queen for unmatched stability and support. This is a sleep setup designed not just to feel good in the showroom, but to stand up to years of everyday use.
If you’re tired of mattresses that break down long before you’re ready to replace them, it’s time to step up to something better. Come feel the TheraLuxe HD difference for yourself—we dare you to compare.
Not sure what makes this “HD”? See our Heavy-Duty Mattress Guide.
