BreathableBaby Breathable Mesh Liner (Bumper) for Full-Size Cribs. This classic white liner, designed with 3mm mesh, promotes unrestricted airflow thanks to its A.C.T. Air Channel Technology. Made from polyester, it’s not only durable but also machine washable for easy care. Perfectly sized for full-size cribs with a mattress measuring 52" x 28", it comes with both long and short panels to cover 3 or 4 sides of the crib, ensuring versatility for different crib styles. The BreathableBaby Mesh Liner is the original breathable mesh liner with millions sold since 2002, designed to keep little limbs safely inside the crib without the risk of restricted airflow. Installation is a breeze with its hook and loop adjustments, and the liner can be tucked below the mattress edge for a secure fit. Choose the BreathableBaby Mesh Liner for a simple, smart, and safe sleep solution for your little one.