If you are looking for a new mattress to release your back pain with the old mattress.Serweet matress would be a good choice.It will give you a feel of sleeping on a cloud.10-inch of  memory foam and  innersprings combine to create the Serleep mattress you can't live without. The memory foam cradles your body while you sleep to provide a medium feel great for all sleep styles and preferences. But that's not all, this innovative mattress is infused with cool memory foam that helps regulate temperature to keep you sleeping cool. Classic pocketed coils provide lasting support to help create a universally comfortable sleep surface. With new technologies to enhance and protect your sleep, Serleep is here to make sure comfort is always a top priority.

Features

• Hybrid design combines memory foam and springs for a perfect medium comfort feel great for all sleep styles
• Cool memory foam capture and dissipate heat to create a cool sleep environment
• Pocketed innerspring steel coils provide greater resiliency and strength for lasting support
• 10-inch profile is suitable for a master room,guest bedroom,or children's bedroom
• Mattress comes compressed and rolled in a box for convenient shipping and handling
• Mattress Expanding to its original shape within 72 hours.  
• Backed by a ten-year limited warranty.

Dimensions

Twin:      39" Wx 75"L x 10"H      Box dimension:11.4"*11.4"*44.1"     Net Weight: 42lbs             Gross Weight :45.08lbs

TwinXL: 39" Wx 80"L x 10"H      Box dimension:11.4"*11.4"*44.1"     Net Weight: 48.72lbs         Gross Weight :51.81lbs

Full:       54"Wx 75"Lx 10"H         Box dimension:15"*15"*31.9"          Net Weight: 58.82lbs         Gross Weight : 62.17lbs

Queen:  60"W x 80"L x 10"H       Box dimension:15"*15"*34.6"          Net Weight : 65.92lbs        Gross Weight : 69.67lbs