About this item ❤【COOLING QUEEN MATTRESS FOR RESTFUL SLEEPP】:Mingrenn 68" Inch Queen Size Mattress is designed with gel-infused memory foam to keep you cool & stay comfortable all night long. ❤【 LIKE CLOUD SLEEP】: Mingrenn 8" Twin Mattress is designed with three layers all-foam system. To improve support and heat dissipation，mattress include 2” memory foam,2.5” comfortable layer, and 5.5” high density base support foam for ultimate comfort. ❤【QUEEN MATTRESS IN A BOX & FITS ALL BED FRAMES】:Mingreen queen mattress, this queen size mattress is compressed and can be cleverly packed in a box for easy transportation and setting. They fit all king size frames, such as box springs bed frame, floors, slat bases, flat platforms. Please give it 72 hours to expand to queen size mattress,. ❤【SLEEP AT EASE】Mingreen queen marttess all foams meet the highest standards: CertiPUR-US and OEKO-TEX 100, which means mattresses without harmful substances like formaldehyde, mercury, and other heavy metals, you can sleep at ease and pursue a good dream. 【No Risk】Mattresses are covered by a 10-year limit warranty and 30-days money-back return policy. If you are not satisfied with the mattress, you can contact us immediately, and we have a professional customer service team to handle your questions. You can use it with confidence.