BedStory 4 Inch Memory Foam Mattress Topper King Size, Premium Extra Firm Mattress Topper for Back Pain & Support, Bed Topper with 2-Layer Ventilated Design, CertiPUR-US Certified

• HELP WITH BACK PAIN - The slow rebound properties of high-density memory foam conform to the body's curves, align the spine, and relieve back pain. There is no sense of sinking in or being swallowed, providing you with all-night comfort. TWO FIRMNESS SIDES - If you don't know which firmness is right for you, try this! With a double-layer foam design, the top layer of the mattress topper is firm and the bottom layer is extra-firm, giving you the "just right" firmness. COOLING REFRESHING SLEEP - The twin mattress topper infused with cooling gel particles that can capture and distribute heat, besides, the open-cell cooling tech increases breathability, creating a cooler sleeping environment and improving sleep quality. SKIN-FRIENDLY COVER & NON-SLIP - Made of premium material, the hypoallergenic cover is anti-pilling and anti-static. The elastic straps on 4 corners and anti-slip bottom help to keep the bed topper in place. And no toxic odor we promise. RELIABLE QUALITY & SAFE FOR USE - Certificated by CertiPUR-US and OEKO-TEX, the foam topper can keep its original shape for a long time due to the premium material selected. Please put the extra firm mattress topper in a ventilated area for 48-72 hours to fully expand before use. Please feel free to contact us if you have any questions.