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.
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.
A 7/10 firmness — gentle support without sinking. Good for back and combination sleepers, plus side sleepers over 200 lb.
Built for adaptive support and breathability. Every layer is hand-checked before it ships from our warehouse.
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.
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.
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.
Twin, Twin XL, Full, Queen ($2,299), King, CA King. Free White Glove delivery. Visit a showroom or call (800) 218-3578.
