BOPai Intelligent expandable large Smart 15.6 inch Backpack Travel Friendly Water Resistant Anti-Theft Laptop Rucksack with USB Charging Business Laptop Backpack Men Black Multi-Functional

This bag is very durable and useful!

I just purchased the Bopai Intelligent Increase Backpack and am very impressed by how well thought out the design is, the styling, and perceived quality for the price. As context, I am a professional consultant that travels often but am not an extreme road warrior anymore, and I sought a solution that would be highly functional, fit for use, and professional looking.First, the design is very well thought out, and if you have seen Bopai's video on this, you should take a look because it really does cover the bases. In terms of my standard professional setup, I carry a Lenovo Carbon X1 laptop, a iPad for note taking, an over the ear headset that folds somewhat flat (~1.5"), backup powerpack (which can plug into the inside of the backpack and be accessible through a USB port on the outside of the backpack), power adapters, business cards, medicines, money, pens, travel wipes, light toiletries, etc. in the main inner compartment. I may also carry 1.5-2" of documents and papers in the secondary outer compartment. I use the backpack's secret compartment for my passport and sometimes other small critical items. I use the hideable outer pocket for my umbrella. I can fit this all into the backpack without engaging the expandable section of the backpack. While I haven't done it yet, I could easily expand the backpack to carry a Hydro Flask and light change of clothes. One strap of the backpack has a small card slot, which is convenient for putting a metro card, whether it is an Oyster Card for London or an Easy Card for Taipei. There are handles which allow the backpack to be carried from either the top or the side. The side one is clever in the sense that the normal straps of the backpack can actually be hidden completely away and the backpack can be carried sideways more like an attache case. I have not tested the waterproof or resistant characteristics of the backpack, but the ballistic nylon looks to be tight enough to repel and resist moderate rain. Hard to say about whether the zippers would resist a long, heavy downpour on top of the bag.Second, the backpack is quite stylish to my eyes and preserves its form when packed or unpacked (i.e., not completely an unstructured backpack). As context, I have a Tumi Narita attache (was $695 new), which is a slim bag that has a mixture of leather and ballistic nylon, and I use that attache when I go to more formal meetings. The styling on the Bopai really has quite a similar vibe to my Tumi Narita, and I would be very comfortable carrying this backpack into almost any professional setting. In the two pictures I’ve submitted, the Bopai backpack is on the left and the Tumi attache is on the right.Third, the price quality tradeoff seems to be good, provided that the backpack lasts at least 2 years, hopefully longer, say 5-8. My Tumi gear usually lasts 10 years +/-. I could see the Bopai gear lasting quite awhile too, but it is unknown at this point. A lot of people seem to have reported zipper issues in the past. I don't immediately see where zipper issues might occur, but it's these types of fine points (e.g., zipper points, stitch failure, strap tears) where gear can become unusable.At this point, I recommend the Bopai backpack if you are looking for a professional backpack and carry a moderate amount of stuff on a daily basis. I am not sure I would carry thick, heavy textbooks in this backpack, mostly because this backpack looks more professional than rugged.I'll update this post if I run into issues, but I could see myself becoming a longer-term Bopai proponent.

This is going to be a little long review. I recently started a new job and was looking for a backpack which was slim and yet can be expandable and can be used for the travel as well with extra stuff being packed. I had three requirements1. As slim a possible for regular everyday work travel . I had the following items daily:-- Laptop 15"-- Laptop charger-- Glasses with case (Reading and sun glasses)-- Mouse-- Travel chargers-- Headphone with case-- Bunch of charging cables2. For Travel which included all of the above and then a ipad, extra charger and a change of cloth for overnight travel3. When its for daily work travel, it should be as slim as possible and should be sturdy and roomy for travel and flexibleI wanted to take my time comparing multiple different backpack. After doing research on some of the best ones, here are the ones which i picked with different range of cost and styles:a.TIMBUK2 Authority Laptop Backpack Deluxe, Eco Black Deluxe:https://www.amazon.com/dp/B09B32FCVY?psc=1&ref=ppx_yo2ov_dt_b_product_detailsb. Laptop Backpack, Business Travel Anti Theft Slim Durable Laptops Backpack (Vohler):https://www.amazon.com/dp/B07F2YJRN2?ref=ppx_yo2ov_dt_b_product_details&th=1c. BANGE Business Smart Backpack Waterproof fit 15.6 Inch Laptop Backpackhttps://www.amazon.com/dp/B09Z68F3HP?psc=1&ref=ppx_yo2ov_dt_b_product_detailsd. BOPAI Slim Laptop Backpack 15 inch USB Charging Backpack for Menhttps://www.amazon.com/dp/B07ZCTW9FZ?ref=ppx_yo2ov_dt_b_product_details&th=1e. BOPAI Intelligent Increase Backpack Men Travel Friendly Laptop Backpackhttps://www.amazon.com/dp/B07FVKGPBL?psc=1&ref=ppx_yo2ov_dt_b_product_detailsSome of the above was good with greater capacity and some were great for compactness. However, the clear winner was "BOPAI Intelligent Increase Backpack Men Travel Friendly Laptop Backpack" as it satisfied all my requirements! it was slim and at the same time expandable for travel which i dont have to do it everyday. The only complain i have is the shape is very boxy! i understand why they would have built it this way. It allows the backpack to be used as regular laptop bag as well.At this point i dont know the quality of the zippers/straps and in general rough use. I will add my feedback in next few months after i have used it for a while!