Does any one know if the Spring Air mattress Zeus The Last Mattress with latex is a good choice for a plus size side sleeper in a firm mattress? No info about it anywhere!!!
I like the build of it.
This is how it’s constructed:
Quilting foam
1" soft latex
1" soft serene foam
1" medium firmness high density polyfoam
1575 coils in a queen with 17g wire thickness
Tufted for durability
I think it looks very high quality and supportive. It doesn’t look like it’d be really firm, probably medium-firm.
Will the Zeus support 235-240 pounds well and be resistant to cratering and dips? Where is this information? Spring Air doesn’t show it. Want to make sure this bed holds up, and not wanting to sink in, but to be able to turn and move around in the bed, and for it to have strong perimeter / sides. And for it to last!! What is the depth of mattress?. Wanting a FULL size mattress,
This is where I found all the information about it. How tall are you? You’d just need to make sure your frame or base is very solid, not a wire grid preferably slats spaced 2-3" from each other.
Given that there’s latex on the top that’ll make it easy to move around on..of course try it in person if you can
Hi MoJo1.
Welcome to our Mattress Forum. 
The Spring Air “Zeus” (The Last Mattress) uses solid materials on paper, but for a plus-size side sleeper wanting a firm feel, there are some significant red flags with its specific coil gauge.
Here is a breakdown of its specs, how it applies to your sleeper profile, and what to watch out for:
The mattress uses a Quantum encased coil unit with 1,575 coils in a Queen, but they use 17-gauge coils. For comfort layers, it features Talalay latex paired with high-density polyfoam, hand-tufted 20 times (in a Queen) to pre-compress the materials, all wrapped in a phase-change cooling cover.
Is it a good choice for a plus-size side sleeper needing firmness?
1. The Red Flag: Coil Wire Gauge (17-Gauge) For plus-size sleepers (generally 200–230+ lbs), coil support is critical. Wire gauge works inversely: a lower number means a thicker, firmer, stronger wire (e.g., 13.5 to 14.5 gauge is heavy-duty/firm; 15 to 16 gauge is medium/plush).
17-gauge coils are extremely thin wire. Even though they offset this by using a high coil count (1,575 coils), thinner wire gives much more easily under concentrated weight. For a higher-weight sleeper, 17-gauge coils are prone to bottoming out under the hips over time, even if the top feels firm at first due to the tufting.
2. Side-Sleeping + Firmness Dilemma Side sleepers need pressure relief at the shoulder and hip so the joint can sink in enough to keep the spine straight. Hand-tufting paired with firm latex and high-density foam makes for a very rigid surface. If a mattress is too firm for a side sleeper, your shoulder and hip bear the brunt of your body weight, which frequently causes arm numbness, shoulder joint pain, or hip pressure.
Because the coils underneath are a soft 17-gauge, you end up with an awkward combination: a stiff top surface that creates pressure points at your shoulder, paired with a coil base that sags under your heavier torso and hip area.
3. The Positives Talalay latex is one of the best materials for side sleepers because it’s buoyant, breathable, and pressure-relieving without the deep “stuck” feeling of memory foam. Furthermore, hand-tufting pre-compresses the foam and latex layers, which drastically reduces false loft (initial body impressions) and increases long-term durability.
The Verdict (according to me, anyway)
It is likely NOT the best choice for a plus-size side sleeper looking for a firm bed.
If you were a back sleeper or a lighter side sleeper, the hand-tufting and Talalay latex would be great. But for a higher weight profile on your side, the 17-gauge coils are simply too light to offer the deep support required to keep your spine aligned over time.
What to Look for Instead:
For a plus-size side sleeper who wants a durable, supportive, but pressure-relieving firm build:
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Look for heavy-duty coils: Aim for a coil unit built with 13.5 to 15-gauge wire (e.g., Leggett & Platt Caliber Edge or Quantum Edge Elite HD units).
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Targeted Latex Thickness: Look for 2 to 3 inches of medium (28–32 ILD) or soft (19–24 ILD) Talalay latex on top of a heavy-duty coil core. The top needs enough give for the shoulder, but the coils below must be strong enough to hold up the hips without bowing.
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Consider Heavy-Duty / HD Mattress Lines: Look into specs similar to HD-engineered builds (like Titan, Big Fig, or custom modular latex/hybrid builds like SleepEZ or Arizona Premium Mattress) where you can specify a strong coil base with a medium-firm Talalay comfort layer.
NikkiTMU