• Big life changes such as entering college, getting your first apartment or house, or downsizing and living the RV life may call for a new sleep surface. This 12" twin bed mattress fills multiple roles and is a budget friendly solution to your mattress needs. From the soft knitted fabric top to the individually wrapped pocket springs, this twin-size hybrid pocket spring mattress is ideal for almost any bed frame and the foam is CertiPUR-US Certified as free from heavy metals, phthalates, BPDE, formaldehyde and has reduced VOCs. Arriving compressed and packaged for your convenience, this twin size bed in a box is easy to move wherever you need it. Ready for use immediately, this hybrid mattress twiny expands within 48 - 72 hours for total comfort.• 12" Hybrid Foam and Pocket Spring Twin Mattress in a Box• Breathable Knitted Fabric Covering• CertiPUR-US Certified High Density Foam• Individually Wrapped Pocket Springs• Fits Most Foundation or Slatted Support Bed Frames• Ideal for RV''s, Trundle Beds, Bunk Beds, Day Beds, and Adjustable Bed Frames• Compressed and Boxed For Easy Handling• Please Allow 48-72 Hours for Complete Expansion• Please Allow 48-72 Hours for Complete Expansion• Single Unit Weight: 48 lbs• Item Width: 39 Inches• Item Depth: 75 Inches• Item Height: 12 Inches• Weight Capacity: 500 lbs