Case Logic Welded Sleeve for 11-Inch MacBook Air (RUL-115) Molded EVA foam provides a precise, super slim fit for the 11 inch MacBook Air Fits devices 15.2 x 1.2 x 10.5 in Additional fold of material at the opening and welded seams create water-resistant protection for your Air Nylex-lined interior shields your Air from scratches and bumps Compressed design on the exterior of the sleeve adds style and texture