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♥ External Dimensions: 18.1 x 12.8 x 1.3 inch;Internal Dimensions: 17 x 12.2 x 1 inch.Suitable for 17-17.3 inch: Dell, Acer, ASUS, Samsung, HP and other brand laptops.(Please allow a little size different because of manual measurement).♥Excellent Detail: Use Exquisite zipper,all stress points have been strengthened, make sure the bag does not fall apart when carrying heavy goods.♥Multifunctional lightweight Laptop Sleeve: 2-way to carry: provide a removable shoulder strap,can be use as shoulder bag or handbag base on your need Hideable handle strap,when hide it, easier to slide to your backpack as a inner bag.It will be a good partner for your daily use or business trip.