PS Le Periple3-in-1 15.6/17.3 inch Laptop Backpack for Men/Women, Business Briefcase Work Backpack Messenger Bag(Lanny)

Q: Is this a good and practical briefcase? How is the quality?

This is the 15.6-inch briefcase from PETITE SIMONE that I'm using. I carry it with me for daily work, and it fits my 15.4-inch MacBook perfectly. It also has enough room for my charger, notebook, and eyeglasses case. Sometimes, I even like to wear it as a shoulder bag, which is very convenient when I need to carry a lot of things. Of course, it can also be a backpack. As for the quality, I think it's pretty good, very sturdy, and the zippers are smooth.

Q: Is there really a single shoulder strap? Is the strap long enough to wear as a cross body?

Yes. I just tried it and yes it is long enough for cross body. I am 5'6"

Q: What's the actual dimensions of the 17.3 inch bag? Airport maximum length for handheld bag is 18inches

External dimensions: 17.8*6.3*12.6 inches,Large Capacity & 12 Pockets,For traveling work carry is a good choice.

Q: Does this bag open from the "top" like a backpack?

The opening and closing of this laptop backpack are on the side of the bag, making it convenient to access your items by placing the bag on its side. Thank you for your interest in our product.