Englander’s firm build — quiet motion, even contour, US craftsmanship.
The Englander O'Conner Luxury Firm Euro Top Mattress is a firm innerspring mattress built for back and stomach sleepers, and plus-size sleepers. It pairs a quality comfort system with a responsive support core for nightly support that doesn't pack down. At 16.5", it sits in the premium profile range — generous enough for adjustable bases yet still easy to sheet.
- Back and stomach sleepers
- Plus-size sleepers needing lift
- Sleepers with chronic lower-back pain
- Hot sleepers (less foam to trap heat)
- Side sleepers under 150 lb (shoulder pressure)
- Sleepers wanting cushioned pressure relief
A foam-encased perimeter lets you use the full sleep surface — and sit on the edge to dress.
A reinforced center third keeps the spine aligned across every position.
A tall comfort and support stack means more contour up top and stronger lumbar push-back below.
We deliver, set up in your bedroom, and haul away your old mattress — no extra charge.
Engineered for medium-firm support.
A 7/10 firmness — gentle support without sinking. Good for back and combination sleepers, plus side sleepers over 200 lb.
4 layers, working together.
Built for adaptive support and breathability. Every layer is hand-checked before it ships from our warehouse.
- L01Quilted comfort topA plush quilt that softens the surface feel.
- L02Comfort foam layersSoft-and-medium foam plies that cushion the coil response.
- L03Pocketed (or offset) coilsA spring unit that delivers responsive support and breathability.
- L04Foam-encased perimeterA reinforced edge that lets you use the full surface and sit on the side.
The details.
- Height
- 16.5"
- Firmness
- Firm
- Materials
- Innerspring
- Sizes
- Queen, King, CA King, Twin, Twin XL, Full
- Trial
- 120 nights
- Brand
- Englander
About this mattress
Englander O’Conner Luxury Firm Euro Top 16.5" Mattress
The O’Conner is Englander’s premium collection, featuring their most advanced cooling technology: the Glacier Phase Change Cover and 3° Cooling Coils. Phase change material actively absorbs and releases body heat to maintain a consistent sleep temperature throughout the night — not just passive cooling, but active thermal regulation. At 16.5 inches and $2,299 Queen, the O’Conner Firm is a tall, substantial mattress built for sleepers who take both temperature and support seriously.
Advanced Cooling Technology
The Glacier Phase Change Cover uses phase change material (PCM) woven into the fabric. PCM absorbs excess body heat when you’re warm and releases it when you cool down, maintaining a more consistent temperature than gel, copper, or standard cooling fabrics. The 3° Cooling Coils are engineered specifically for enhanced heat dissipation through the mattress core. Copper memory foam adds a third cooling layer. Three distinct cooling technologies working in concert: cover, coils, and foam. Englander Elite Edge technology provides the strongest edge support in their lineup, maintaining the full 16.5-inch profile from edge to edge.
Construction
- Glacier Phase Change Cover — Active temperature regulation (absorbs and releases heat)
- Firm Euro Top Comfort Layer — Firm surface with flush-sewn euro top
- Copper Memory Foam — Thermal conductivity + antimicrobial
- 3° Cooling Coils — Engineered for enhanced heat dissipation
- Thousands of Fabric-Wrapped Springs — Individually responsive support
- Englander Elite Edge — Premium reinforced perimeter
Who the O’Conner Firm Is Best For
Hot sleepers who want firm — triple-layer cooling (PCM cover + cooling coils + copper foam) is the most advanced in the Englander lineup. Back sleepers who want premium quality at a step below the Allendale flagship. Sleepers upgrading from the Everest who want Phase Change + 3° Cooling Coils.
Available Sizes
Twin, Twin XL, Full, Queen ($2,299), King, CA King. Free White Glove delivery. Visit a showroom or call (800) 218-3578.
Common questions
Is delivery free on the Englander O'Conner Luxury Firm Euro Top 16.5" Mattress?
Yes — free white-glove delivery anywhere in Los Angeles on orders over $499, including setup and free haul-away of your old mattress. Order by 4pm for same-day delivery.
What if the Englander O'Conner Luxury Firm Euro Top 16.5" Mattress isn't comfortable?
You have our 120-night comfort exchange. Sleep on it for at least 30 nights, and if it isn't right, exchange it for another mattress — we handle the pickup and redelivery.
Can I finance this mattress?
Yes — 0% APR financing through Synchrony on approved credit, plus Acima lease-to-own with no credit needed. Most applicants are approved in minutes at checkout or in any showroom.
Can I try the Englander O'Conner Luxury Firm Euro Top 16.5" Mattress in person?
Yes — our Los Angeles showrooms in Koreatown, West LA, La Brea, Studio City, and Glendale carry our lineup on the floor. Walk-ins welcome, no appointment needed.
