WATERPROOF - The laptop briefcase bag was made of lightweight, durable and waterproof encrypted polyester fabric, wear-resistant, scratch-resistant and long-lasting. Thick fabric, effectively prevent water splashing, prevent corrosion. Besides, the laptop shoulder bag comes with two-way material of soft pull, durable and non-fading. 3D BREATHABLE PADDING - laptop shoulder bag with padded shoulder strap removable and adjustable reinforced shoulder straps. it has excellent thick breathable mesh padding, providing your back with plenty of cushioned comfort, allowing you to use it every day quickly and comfortably for personal and professional use. The belt loop is convenient and practical as it can be adjusted on demand. MULTI-LAYER POCKETS - Alfheim case can hold laptop up to 14-16", compatible for Dell HP, Asus, Lenovo, Toshiba, Acer Aspire, Samsung, Sony, MacBook. Patented dual access zipper design. There are 2 main compartments for storing laptop which can also store ipad/books/documents and so on. 5 small pockets are inside, 2 compartments, 2 pen slots. The front pocket is perfect for storing your IPAD, mobile phone or any other small things. WIDE APPLICATION - Alfhiem lightweight shoulder bag is very practical and universal. it is suitable for different crowds (men, women or students). As it is a large storage space, you can carry this bag for school, leisure, hiking, camping, trekking, air travel, walking, outdoor sports, hiking. shopping, business trips and overnight stays.