Using this Cool Gel Memory Foam Mattress Topper is a breeze. Once you receive it, unpack it and let it expand. It'll start expanding in 1 - 2 hours, but give it 24 hours for the best results. Then, just place it on your queen - size bed. You don't need to assemble anything. For co - sleepers, you'll notice less motion transfer, so you won't be disturbed by your partner's movements. To keep it in good shape, clean it regularly with a vacuum cleaner using a soft - brush attachment to remove dirt. Also, remember it's fire - rated for your safety, but try to keep it away from open flames. And if you want to get the most out of its cooling feature, make sure your bedroom isn't overly warm.