SpringMattress Inner Materials: a.top padding: 1.5 zone knitted fabric with foam quilting Fabric quilted with 2cm 25D foam 2.High Density Foam with 30 gsm non woven Fabric 3.5 cm High Density Thicker foam as padding 4.80g/m2 non-woven fabric 5.Two pieces ofhard pads at 350# 6.20cmBonnel Spring with 2.2 gause, 21rolls b.Side Padding: quilted with 1cm 20D foam c.Bottom padding: 1.two pieces of white pads 2.Thick soft pad 3.High Density Foam 4.5 zone knitted fabric with foam quilting Fabric quilted with 1.5cm 25D foam Function: 1.High density foam can extend operating life 2.5 zone knitted fabric with foam quilting fabric have good breath of mattress 3.Beauty and fascinating appearance 4.High Quality and competitive price could bring more customers for you Features 1Bonnel spring, which has undergone 250 degrees high temperature treatment. It can relieve body pressureaveragely and support each part of the body homogeneously.2 High density and elastic sponge support the back more effectively, softly and exquisitely gainprominent restoring force.Sizes:sizeUSA(by inch)USA(by cm)size after compressed(cm)pcs/HQUK(by inch)UK(by cm)size after compressedpcs/HQTwin/single39X75X12"99X191X3099X191X639636X75X12"91X191X3091X191X6396Double/Full54X75X12"137X191X30137X191X628848X75X12"122X191X30122X191X6324Queen60X80X12"152X203X30152X203X625260X78X12"152X198X30152X198X6252King76X80X12"193X203X30193X203X618072X78X12"182X198X30182X198X6216 Notes:1All sizes are available2 After being compressed, it is suggested that it open within half a year to keep the size being 95% of its original size.3 Make sure that the internal mattress being circulating, maintain clean andsanitary4 Eliminate the body's metabolism and peculiar smellOthers:1 OEM service is supplied.2 provide design as per customer's requests.3 Warrantee:10 years.4 The more you bought, the more you want to buy.We cansupple allkinds ofmattresseswithGood Qualityat Competitive Price!