DURABLE AND SOFT: Heavy gauge tempered steel coils provide consistent support, while the quilted fabric cover and deep foam layer ensure comfort VERSATILE PROFILE: Ideal as bunk bed mattress, day bed mattress, trundle bed mattress, RV mattress, or kids mattress. Firm profile is great for back or stomach sleepers PICK YOUR FRAME: This mattress can be used with a box spring, slatted frame, platform bed, or metal grid to work with any bed frame COMPACT COMFORT: Full XL size mattress measures 54” (W) x 80” (L) x 6” (D) EASY INSTALL: Remove mattress from packaging within 72 hours and allow 48-72 hours for proper decompression before using