The Low Profile Quilted Grid Knit Innerspring Mattress with Navy Piped Border, model MAT-QT-NAVY-200, is an unbranded rectangular sleep solution with a clean, streamlined visual profile. The grey grid-patterned knitted polyester top panel features 10mm light grey stitched fabric piping along its perimeter, meeting a deep navy blue woven polyester side border for a crisp, modern look. Its 200mm total profile includes gently rounded 30mm corners, with woven fabric and coated paper identification tags positioned 250mm from each corner for unobtrusive branding visibility. Built for consistent long-term use, the mattress features a core of 13.5 gauge steel Bonnell innerspring coils, with 396 coils for this double size, encased in 70mm wide high-density polyurethane foam edge supports reinforced with 40mm thick side rails. The 20mm quilted top sits over 20mm high-resilience polyurethane foam comfort fill, backed by non-woven polyester scrim, with seams stitched at 3 stitches per cm for durable construction. The mattress supports a 300kg static weight capacity, with a medium firm feel, and weighs 37kg net. At delivery, the product arrives vacuum roll-packed, and requires 72 hours to fully expand before use. Functionally, the evenly arranged coils deliver zoned pressure distribution across the sleep surface, while the foam encasement prevents perimeter sag when users sit on mattress edges. The breathable knitted quilt top allows consistent air circulation to reduce heat buildup during rest. Users are advised to rotate the mattress 180 degrees periodically to equalize wear over time. It is designed to fit standard slatted, platform, or box spring bed frames, including bases with 15mm thick bent plywood or solid timber slats, and does not require a separate box spring for installation on solid or slatted platform bases. This mattress suits a wide range of residential and light commercial spaces. Its low 200mm profile makes it ideal for height-restricted bunk and loft beds, while its durable construction works well in master, guest, and teenager bedrooms, high-turnover residential rental properties, mid-scale budget hotel guest rooms, and student dormitories. Procurement teams should note the product ships as one set split across two cartons, with a total packaged gross weight of 130kg and 0.9m³ total packaging volume, requiring 40 minutes per set for assembly. It supports up to 5 controlled assembly cycles for repositioning or reinstallation needs, and should be matched to appropriate double size bed frames with 1500mm by 2000mm sleep surface dimensions for proper fit.