If you've come to Bensons for a firm Slumberland, the Air 3.0 Memory Mattress is the rung built for you: the second of four in the Air range, and the first sold only in Firm and Extra Firm, with no medium. Living with it means a tall bed, 30cm deep, with 50mm of memory foam and two layers of pocket springs under a quilted cool-touch cover. I rate Slumberland, Bensons' own brand, as solidly built and fairly priced.
Put the Firm on your shortlist if you sleep on your back or front and like a bed firm without it feeling hard. I tried it in a Bensons store and it was supportive and very comfortable on my back, nearly as good on my front, and on my side it left my shoulder with too little give. My partner sleeps on their back or front, so this is the rung I'd point them at, while I'm curled up on my side wanting something softer. Side sleepers and lighter bodies should skip it for the Slumberland Air Memory 2.0, which comes in Medium, because even the softer of this one's two grades is Firm. The catch, for everyone, is what owners keep raising: it can feel harder at home than in the shop, and it's deep enough, and by their account heavy enough, to make sheets and rotating a faff.
Firm is the softest grade the 3.0 comes in
Look at the Firm, and leave Extra Firm to heavier back and front sleepers who already know they like that much push. Don't order Extra Firm as insurance for your back. Firmer-is-better is the most expensive misunderstanding in the trade. The 50mm of Sensaform memory foam, zoned into seven areas, and the quilted top are what give a firm bed some pressure relief. Front sleepers, keep the pillow thin so your neck isn't cranked up all night.
Only 1250 of the 2550 springs are full height
The 1250 full-height pockets are the springs I'd judge it on. The other 1300 in Bensons' "2550 Pocket Spring System" are minis, which Bensons says are there for comfort, so more than half the headline total is mini springs. To my mind mini springs add little you can feel, and I'd rather have a thicker comfort layer or some wool in their place.
Bensons calls the full-height springs "nested", laid in tight, staggered rows with no gaps between them, and that layout is what its "20% increased support" claim rests on. The 2.0 has the same 1250 count, so the step up here adds the minis, 10mm more foam and 1cm more depth. Hot sleepers, look elsewhere: the memory foam makes it warm, air channels and all, and a cool-touch cover stays cool right up until you've lain on it for a bit.
Owners keep saying it arrives harder than the shop model
Firmer in your bedroom than on the shop floor is the complaint to take most seriously. Most of the reviews date from before the May 2026 redevelopment. Several owners found far less give than on the showroom bed, and one who says they like firm mattresses calls theirs "like lying on a rock". Another, on Extra Firm, finds it bouncy and not firm at all. Give any new mattress a fortnight before you judge it, though a few here were still unhappy a month or two in.
Happy owners talk about sleeping soundly and not feeling a partner turn over. A few report a dip where they sleep, one on an Extra Firm after three weeks and another at about twelve months. Early sagging would put me off fastest, so ask Bensons what depth of dip counts as a fault under the guarantee before you pay. Several more mention a chemical smell that hung about for weeks. One owner still had it at two months, and new-mattress smell normally goes, so that's one I'd be on the phone about.
At 30cm deep it needs deep sheets and a second pair of hands
Buy deep-pocket fitted sheets before it arrives, because 30cm sits at the top of what a standard fitted sheet is cut for, and a few owners have had to buy new ones. Add your base height to that 30cm before you order, too. One shorter owner calls getting into bed a scramble.
Flipping it is off the table, so rotating is your only option. I'd always rather have a mattress I can turn, so that counts against it for me. Bensons points you to a care guide for how often to rotate and publishes no weight for any size, so ask for both. A few owners call it hefty, and one found rotating it close to impossible. The flag-stitched handles help, but rotate it with two of you.
What to buy instead
Side sleepers and lighter bodies should buy the Slumberland Air Memory 2.0 Mattress in Medium. You keep the same 1250 full-height springs and drop to 40mm of foam and 29cm of depth. The mini layer is the main thing you give up, and I wouldn't miss it; the gain is the softer grade a side sleeper needs, a swap I'd make every time.
