SPGEMF3/3 Size: Twin Features: -Inspired by nature, that allow for constant airflow inside the mattress, maximizing thermal comfort and body alignment with a pleasant sense of pressure-relief.-Maximum elimination of moisture, gem-like foam originally designed for outdoor use.-Certified healthy, safe materials under the strictest Oekotex 100 Class I.-Constant air circulation thanks to a 2nd stage in the manufacturing process in which each of the cells that make up the foam are re-structured into a gem-like shape.-Third party certified as excellent in thermal sleep comfort test, with at least a 35pct better performance than other memory foam mattresses.-Twin: 10" H x 38" W x 75" D, 37.5 lbs.-Twin Extra Long: 10" H x 38" W x 80" D, 39 lbs.-Full: 10" H x 54" W x 75" D, 53 lbs.-Queen: 10" H x 60" W x 80" D, 61 lbs.-Eastern King: 10" H x 76" W x 80" D, 77 lbs.-California King: 10" H x 72" W x 84" D, 76.5 lbs. Construction: -Gem-like (pentagon-dodecahedron) multilayer foam construction. Collection: -Gemma collection.