Open Air Vented Crib Bumper or Liner, Gray (Grey). The Open Air Vented Crib Liner is a perfect mix and match piece for your nursery in medium gray. Constructed from gray velour with a burnout chevron pattern, this liner has sewn in vented air holes all along the lower half. Soft fabric construction prevents little arms and legs from extending through the crib slats and also helps to prevent bumps and bruises. Liner is light weight, thin and collapsible to prevent climbing, and the construction features patented engineering that aids in the prevention of suffocation and re-breathing of carbon dioxide. The liner consists of 2 long panels measuring 10.25 inches H x 52 inches L each and 2 short panels measuring 10.25 inches H x 27 inches L each, and each panel has multiple attachment points for security. Each tie measures no more than 8.5 inches L for safety. The open airflow crib liner is safe and stylish, and it has been fully safety tested to show that it poses no hazards while also providing many benefits. Fits standard size crib.