Firm gets a bad reputation, usually from people who've slept on something genuinely hard. There's a difference: hard means nothing between you and the support — pressure builds at the shoulder and hip. Firm means the surface gives just enough to relieve pressure, then stops. You stay on top of the mattress, and your spine keeps its line all night.
The RUP-2602 is the second kind — around 7 out of 10, clearly supportive, with a thin but real comfort layer doing genuine pressure relief.
1 · A Comfort Layer That's Restrained On Purpose
You settle a few centimetres, then the coils take over. That "stops rather than keeps going" moment is exactly what firm sleepers want.
2 · 2.0 mm Pocketed Coils That Move Independently
Each spring sits in its own fabric pocket, so the mattress responds point by point — compressing appropriately under your hips, barely moving under your calves. Weight is distributed where it actually falls, so the surface stays level instead of hollowing out in the middle. And movement is absorbed at the source, so a partner turning over doesn't send a ripple across the bed.
3 · Three Rows of Reinforcement Around the Edge
Ordinary pocket spring beds fail at the perimeter first. Three rows of heavier 2.2 mm coils (approx. 13 gauge) run around all four sides: sitting on the edge feels solid, the full width is usable (a Queen genuinely feels wider), and the bed resists sagging outward over years of use.
Back and stomach sleepers · heavier sleepers · couples · anyone who's felt "stuck" in deep memory foam.
Who should look elsewhere: side sleepers under about 130 lb (60 kg), and anyone who likes sinking into a bed — you'll probably prefer our medium-soft or soft models.
Single-sided — never flip it, just rotate 180° every 3–6 months. Arrives compressed and roll-packed in one reinforced carton: sleepable within hours, full height in 24–72 hours. A faint new-mattress smell for a day or two is normal; ventilate and it clears.

How firm is "firm"? Around 7 out of 10 — the surface gives slightly, then stops. Supportive, not hard.
Is firm good for back pain? We can't make medical claims. What we can say is firm surfaces help keep the hips level, which is what back and stomach sleepers generally need. For a specific condition, consult a professional.
Will it feel too hard? There's a real comfort layer — 1.5 cm gel memory foam plus comfort foam and wadding — so you get pressure relief; it just stops sooner than a softer bed.
Do I need to flip it? No. Single-sided — just rotate head-to-foot every few months.
How long until it's ready? Sleepable within hours; full height in 24–72 hours.
Choose your size and add to cart — firm, level, quiet, delivered in one box.