Notice: The [15"-15.4"] sleeve Compatible with 15" MacBook. External: 37.5 * 26.5 * 2cm, Internal: 36 * 25 * 3cm.If your laptop is not among these models, or you especially need a snug fit or a loose fit, please compare the actual dimensions of your laptop with the internal dimensions of the sleeve, and make sure those are smaller than the internal dimensions, the more similar, the more fit. MULTI-LAYER PROTECTION: As an inner case,outer layer is covered with polyester fabric, protecting against dust dirt debris scratches. Soft fluffy lining interior and high resilience EPE inner layer offers protection against bumps shakes and extrusion when it's put in backpack or suitcase. SMOOTH ZIPPER: Strong top-loading zipper ensures the laptop sleeve will stay closed,smoothly and protect the contents inside perfectly. FASHIONABLE DESIGN: Resistant padded laptop computer sleeve case is perfect for travel and business,personalize your laptop with its own unique style. WARM REMINDER: To choose the right size you need, please read the following instructions in Product Description carefully before ordering. Dimensions: External: 37.5 * 26.5 * 2cm, Internal: 36 * 25 * 3cm. package:1pc laptop computer sleeve case.