Quick overview from the supplier:
13.3" NB sleeve bag - CaseLogic QNS113K Black Moldet Sleeve Bag with Handles•Molded EVA sleeve holds netbooks with up to an 13.3" display•Thick. quilted padding keeps your netbook protected and snugly in place to prevent it from sliding around•Clamshell design and integrated airflow channels allow you to use your netbook while still in the sleeve without the risk of overheating•Padded carry handles for comfortable transportation