L'BAIET GEL MEMORY FOAM MATTRESSSet Up Instructions Unbox with Ease Place the box on its side and remove all packing materials. Your journey to ultimate comfort starts here! Unroll to Unveil Position the mattress on your chosen surface. Gently remove the plastic cover. A slight odor? No worries it's normal and will fade in a few hours. Decompress for Perfection Give your full size mattresses 48 72 hours to fully expand. Patience is key to unlock its full potential.