This white zoned medium-profile hybrid residential mattress, model MAT-ZONED-HYB-250-K from an unbranded line, is delivered factory-sealed in clear protective PVC wrap for pristine, new condition. The king-size unit measures 1800 by 2000 by 250 mm, with a clean, streamlined white top surface finished in stretch knitted polyester that pairs with a neutral woven polyester non-slip base for a polished, understated look suited to a wide range of bed frame aesthetics. Its internal structure is built in layered, purpose-aligned sections: a 20mm top quilting layer of 21D soft open-cell polyurethane foam sits atop a 10mm transition layer of 28D gel-infused memory foam, followed by a 20mm layer of 25D high-density polyurethane foam, and a 200mm core of 5-zone high-carbon 2.1mm wire pocket springs. An 80mm wide high-density polyurethane foam border runs the full perimeter for edge reinforcement, with 3 stitches per cm along side seams for secure construction, and a 2mm thick non-slip base fabric for stable placement. Performance features are tailored to consistent sleep comfort: the 5-zoned firmness gradient includes a firmer lumbar section for targeted spinal alignment, while individually wrapped pocket springs deliver 92% motion transfer reduction and eliminate spring squeak for undisturbed rest. The open-cell foam structure and breathable knitted cover support continuous airflow for temperature regulation, the gel memory foam layer contours to shoulders and hips to reduce pressure points, and the dense perimeter foam prevents edge compression when sitting on bed sides. The mattress rates 6 on the 10firmness scale, supports 360kg of evenly distributed static weight, and accommodates sleepers up to 180kg per side across side, back, and stomach positions. It is vacuum-compressible for compact shipping and easy in-home movement, with a cover rated for 60000 abrasion cycles and foam engineered for 95% height retention to support long-term use. This model is suited for residential primary bedrooms paired with king-size upholstered platform beds, guest rooms serving diverse sleep position preferences, furnished apartments and rental properties, and high-turnover hotel guest rooms. It works with standard slatted, platform, or adjustable bed frames. Procurement teams should note each set ships across two cartons, requires 40 minutes of assembly per unit, has a total packaged gross weight of 130kg and packaging volume of 0.9 cubic meters, with no specialized tools or hardware required for setup.