Foldable baby crib with storage bag and wheels This instruction manual contains detailed steps for opening and folding a portable baby crib (Playpen), as well as usage instructions for the second layer. Opening steps: Include taking the crib out of the bag, unfolding the mattress, securing the sides, and then pressing the center of the base down to lock it in place. Folding steps: Include pulling the central strap upwards, releasing the sides, rolling the mattress around the crib, and then placing it in the bag. Important information: The manual recommends cleaning with mild soap or detergent and warm water, and warns against using bleach or getting close to strong heat sources.