【High-density Memory Foam 】Made of 40D (approximately 3.5 lbs/cubic foot) high-density aviation-grade memory foam and gel beads to provide good support while maintaining the highest air permeability 【Improve sleep quality】 The 3-inch memory mattress fits the body curve and perfectly fits the body contour. Provide you with support anytime, anywhere, without any rebound pressure. Keep the spine in a neutral position, relax the muscles, and reduce morning soreness. 【Rest assured and reliable】CertiPUR-US certified foam meets rigorous standards for content, emissions and durability 【Bamboo Fiber Cover】: bamboo cover is certificated OEKO-TEX , Use skin-friendly and breathable bamboo fiber, with adjustable elastic straps and anti-slip surface backing to prevent sliding. Zipper closure for convenient disassembly and washing. 【Size and instructions for use】 Queen 60 x 80 x 3 inches - Before first use, pls unzip and remove the cover, leave the memory foam flatly in a well ventilated area for 24-48 hours until it’s fully expanded. 10-year warranty, free replacement of non-human damage within 2 years.（Necessary maintenance: 180° horizontal flip every other month） Product Description TIPS 1. Vacuum packaging, with an unpacking tool in the box, it is not easy to accidentally damage the mattress topper 2. After unpacking the new product, please place it in a well-ventilated place for 24-48 hours and wait for it to return to its original state (there may be a faint smell of new product, which will dissipate as the state recovers) Twin 39 x 75 x 3 ' Twin XL size 39 x 80 x 3' Full size 54 x 75 x 3 ' Queen size 60 x 80 x 3' King size 76 x 80 x 3 ' California King size 72 x 84 x 3' Upgrade Your Mattress Replacing a mattress can be an expensive and time-consuming task. A way to increase the mattress topper is comfort level of an existing bed without having to purchase a new mattress. Why choose us？ 1. high density Aviation-grade materials Memory Foam totally follow the contours of the body and provide full support without blind spots 2. Cooling gel infused memory foam, good breathability, regulates body temperature and creates a quality sleep environment 3. Bamboo fiber detachable cover, easy to clean and maintain. 4.with anti-slip particles on the bottom, plus adjustable straps, stable and non-slip. 5.Suitable for sofa bed, guest bed, RV, college dorms, Tatami, camping, outdoor Yoga and more.