Diamond
Diamond Technogel® Technology Armonia 11" Firm Foam Mattress
5.0(27)
Memory FoamFirm
$3,074 – $6,148
From $128/mo · 0% APR
The right pillow keeps your neck and spine aligned with your mattress — loft should match your sleep position (higher and firmer for side, medium for back, thin for stomach). Browse Cooling Pillows below — try every model in person at LA Mattress Store before you buy. Free delivery in Los Angeles on qualifying orders, and 30-day returns.
Cooling mattresses combine heat-dispersing materials — gel-infused foam, copper, phase-change covers, or breathable hybrid coils — to keep your sleep surface at or below skin temperature through the night. For hot sleepers, this is the single highest-impact mattress feature.
How a cooling mattress feels. Varies by build. Gel memory foam still contours but transfers heat faster than standard memory foam. Phase-change covers (PCM) feel cool to the touch when you first lie down because the material absorbs body heat. Hybrid coils underneath always run cooler than all-foam because air moves through the coil unit.
Who a cooling mattress fits. Hot sleepers — sleeping with a partner, sleeping in a warm climate, menopausal night sweats, or just running hot biologically. Also a good choice for anyone in an LA apartment without strong A/C, since indoor temperatures here run warm year-round.
The trade-off. Cooling tech adds cost — premium-tier hybrids and Tempur-Breeze models cost ~$500-1500 more than their non-cooling siblings. Some PCM covers feel "wet-cool" when very cold and lose the effect after the first hour of sleep. Latex and hybrid builds outperform all-foam-with-cooling for sustained overnight thermoregulation. Match the construction to how you sleep first; brand preference is a distant second on this material.
Try a cooling mattress side-by-side with the other categories at any of our 5 LA showrooms, or take the sleep quiz for a personalized recommendation.
Pillow loft should fill the gap between your neck and the mattress so your spine stays neutral. Side sleepers generally need a higher, firmer pillow; back sleepers a medium loft; stomach sleepers a thin, soft one. Getting this right matters as much for neck and shoulder comfort as the mattress itself — take the 2-minute sleep quiz at 2-minute sleep quiz if you are unsure of your dominant position.
The pillows on this page span solid memory foam (contouring, supportive), shredded/adjustable foam (you can add or remove fill), natural latex (responsive and cool), down-alternative (soft and plush), and gel-infused cooling foam for hot sleepers. Each product page lists the fill and loft.
Roughly every 1–3 years depending on material — down-alternative breaks down soonest, memory foam and latex last longest. Quick test: fold the pillow in half; if it stays folded instead of springing back, it has lost support and it is time to replace it.
Free white-glove delivery on orders over $499 anywhere in Los Angeles. Same-day if you order before 4 PM, otherwise next-day. We set up the new mattress, haul away your old one, and recycle it — not landfill.
We back every purchase with a 120-night Love Your Bed Guarantee. Sleep on it for at least 30 nights to let your body adjust, then if it’s not the right fit, exchange it for any other mattress — we credit the full original price.
Yes. We offer 0% APR financing through Synchrony and Acima on approved credit. Terms vary by purchase amount and partner — apply in 60 seconds at checkout or in any showroom.
