6 sides of practical protection for your laptop All of the laptop's edges are protected from stress by an EVA foam strip that is hidden below the zipper, which also increases the sleeve's water resistance. The laptop may be charged while being zipped within the sleeve thanks to a nylon-covered access slot on the edge. Given that these are the most often used laptop sizes for travel, the sleeves have been made to accommodate 11", 13", and 15-inch models.