Plank Firm Luxe Mattress Review: What Buyers Should Know

The New Plank Firm Luxe Brings a Hybrid Design to Firm Mattress Shopping

The sleep market has welcomed a new contender in firm mattresses: the Plank Firm Luxe, a double-sided hybrid bed that combines support with a modern design. Unlike traditional innerspring mattresses, the Plank Firm Luxe places its spring layer in the center of the bed, flanked by foam on both sides. This unusual construction allows the mattress to offer two different firmness levels on each side, giving sleepers flexibility in how they want to rest.

For stomach and back sleepers who spend their days hunched over desks, this mattress delivers consistent support from edge to edge. The design keeps the spine lifted and aligned, reducing lower back strain and the aches that come from poor daytime posture. However, shoppers considering this bed need to understand its strengths and limitations before making a purchase decision.

Design and Construction Details

The Plank Firm Luxe stands 12 inches tall with a unique structure that sets it apart from competitors. One side rates at a solid 8 out of 10 in firmness, while the flip side reaches a 9 to 10 for those who want maximum support. The Firm side includes 2 inches of high-density support foam topped with 1 inch of comfort foam and a 1.5-inch quilted layer. The Extra Firm side uses the same support base but reduces the quilted top to just 0.75 inches, creating that harder feel.

This double-sided design sounds appealing until you try to flip it. The mattress is heavy and lacks handles, making rotation a two-person job that can feel like moving furniture rather than maintaining your bed. For a bed designed to be flipped regularly, this is a notable oversight that shoppers should anticipate.

What Testing Revealed About Comfort and Support

Rigorous lab testing uncovered important details about how this mattress actually performs. The Extra Firm side showed a maximum temperature increase of 14.3 degrees Fahrenheit during testing, while the Firm side climbed 15.1 degrees. These figures rank among the highest in recent mattress testing, meaning hot sleepers may find themselves uncomfortable without additional cooling upgrades like the optional GlacioTex cover. However, both sides do cool down relatively quickly once you leave the bed, losing temperature at rates faster than some competing brands.

Pressure relief testing painted a mixed picture. The mattress resists sinking, with a combined average of 3.25 inches across both sides. This keeps your body lifted and prevents hip or shoulder sagging, which is exactly what firm mattress shoppers want. For stomach sleepers, this translates to a spine-straightening effect that eliminates morning back pain. Back sleepers will appreciate the same lifting sensation. If you’re a side sleeper, however, you may experience pressure buildup at your shoulders and hips, leading to discomfort or that unpleasant ‘dead arm’ sensation during the night.

Pricing and What You Get

The Plank Firm Luxe typically carries an MSRP of $1,598 for a queen size, but Plank’s year-round 25 percent discount brings that price to $1,198.50. Twin models start at $798.75 on sale, while king and California king options run $1,398.75 with the discount applied. This positions the mattress in the upper mid-range category, making it an investment but not a premium luxury purchase. For comparison, the best budget memory foam mattresses cost significantly less, though they sacrifice the hybrid construction and double-sided design.

Every purchase includes a 120-night sleep trial, which should provide enough time to determine if the firmness works for you. The limited lifetime warranty is competitive with industry standards. Based on the materials and construction quality, the mattress should last between 6 and 10 years with proper care.

Who Should Buy This Mattress

The Plank Firm Luxe shines for specific sleeper types. If you sleep on your stomach or back, this bed will keep your spine aligned and supported throughout the night. Office workers who struggle with posture-related back pain often report significant relief. The responsive spring layer adds a touch more body contouring than all-foam options while maintaining that characteristic firm feel. You can also enhance an older or firmer mattress with a mattress topper if you need added cushioning without replacing your entire bed.

Side sleepers should approach carefully. The lack of cushioning at pressure points like shoulders and hips makes sustained side sleeping uncomfortable. The Extra Firm side is especially challenging for side sleepers due to its minimal foam layer.

Key Considerations Before Buying

Beyond firmness and construction, several practical issues matter. The missing handles make flipping unnecessarily difficult, which is frustrating for a bed specifically designed to be double-sided. Hot sleepers should budget for an optional cooling cover upgrade. The 120-night trial, while solid, falls short of some competitors offering 365-night testing periods, which could matter if you need extended time to adjust to an extra-firm mattress. Finally, if budget is your primary concern, the original all-foam Plank Firm mattress offers similar support at $999 for a queen size on sale, though without the hybrid responsiveness or double-sided flexibility.