If you're looking for all the benefits of our ultrasonically welded seams with a gentler price tag, the Sopora Premium Plus was developed for you. It is everything you need in a mattress without compromising quality. The Premium Plus is a 7" deep, all foam mattress with dual sleep surfaces. Made with CertiPUR-US® certified, and GreenGuard® Children and Schools certified foam. The Premium Plus is engineered to withstand wear and provide even ergonomic support. As your child develops, the density required of their sleep surface can change. Which is why we offer dual sleep surfaces. One side is made of eco-friendly, ultra firm, high-density foam. Eco-Friendly foam was developed by industry leaders, to deliver cleaner foam. Eco-Friendly foam products utilize a blend of natural oil based and conventional polyols. Natural polyol is made from natural plant based renewable oils. This blend enables Eco-Friendly foam to perform as well as conventional foam without sacrificing comfort and helping the environment at the same time. The other side of the mattress offers Support Soft high-density foam. Support Soft provides a layer of foam, which is plush in feel and luxurious. The enhanced airflow of this foam creates better air circulation at the surface of the mattress. Support Soft foam has a high level of resilience (bounce back) and high level of durability. The Premium Plus offers ultrasonically welded seams. The welded seam will keep bed bugs, dust mites and fluid leakage out, keeping the inside of the mattress clean. Sopora seams are dropped to the sides of the mattress creating a seamless waterproof edge with no decorative cording or holes on the surface. The Premium Plus offers square corners and edges with no rounded corners or surface designs that can trap dirt or dust mites. The rectangular shape of the mattress holds sheets tight to keep your child safe. The Premium Plus' medical grade, plush stretch knit cloth cover is compliant with all current safety standards. It is waterproof and stain and odor resistant while offering the traditional texture and feel of adult mattresses. Its lightweight and pliable nature enables your child's body to conform to the surface while allowing the inner construction to provide comfort and ergonomic support for which it was designed. The cover is vinyl, PVC, lead and phthalates free, is treated for antimicrobial protection, and cleans easily with a damp sponge.