- Knack Series 1 Laptop Backpack Fits up to 15 Inch - Knack Bags Carry-On Backpack, TSA Approved, Expandable Travel Backpacks With 3 Day Outfit Capacity (Indigo Blue, Medium)

I wasn’t sure what I was getting into but this backpack is definitely worth the investment. It’s extremely high quality and well designed. I love the quick access pockets in the front for things like my phone and AirPods when I’m on the go. I also love the expandable suitcase compartment in the back, which is perfect for travel and going from work to the gym. The material of the backpack is durable and the back padding is super comfortable to wear for long periods of time. There are also some fun features on the backpack that I have not seen before like the hidden water bottle compartment, the trolley sleeve, and the detachable straps that tuck into the backpack. 10/10 would recommend! My go to backpack for everyday now.

If you in need for a backpack and you researching for the perfect backpack, this is the one. This backpack is a little bit pricey but is well worth it in my opinion. I been trying to research on the best backpack since it's so many options to choose from, and I bought 5 at a time so I can choose the best one and this is by far the best traveling bag, and the best selling point is it can extend to a bigger size, if you're trying to research on the perfect bag, I've done the homework for you, this the backpack you want, and it's well built, premium.

I absolutely love this backpack. I had looked all over for the perfect, medium size backpack for our trip to Europe for 35 days. It worked perfectly. There were plenty of pockets for my small items and a good size pocket for my headset, book and misc. My model has the small pocket on the top for drivers license, Chapstick and small items. Love this feature. I also was able to expand the back compartment and pack extra clothing. My two favorite parts are that the clothing part opens like a suitcase and I had no complaints from the airlines about the size. I did have a small carry on so this backpack was my second carry on and it worked as I had hoped. I have since used with the expandable pocket closed for domestic trips and it works great this way as well. Only con is it has the side pocket to slide over your carry on and no handle. It was okay and they have fixed this on the newer version but I loved the front pocket so much I went with the previous model.

I really wanted to give it a 5, but it’s a bit small and it doesn’t always stand up. It’s also a bit pricey. All that aside, the expandability is awesome, turning this rather small 17L daily commuter pack into a 27L weekend bag with a fully opening suitcase enclosure in the back. It has plenty of pockets and a very sleek design. It’s a 5 star bag + 3 star price = 4 stars

I considered over a dozen backpacks, making a spreadsheet of comparisons of price, availability, features, dimensions, and more. After months of trial and error, I finally settled on the Knack Medium Expandable Backpack, and I couldn't be happier! It's comfort, has great interior space that EXPANDS, is built really well, and I love the color. It's a high quality backpack, and definitely worth the price. I strongly recommend this backpack!

I got this as a quick day bag for weekends and also for riding bikes with the kids since I might need to take some extra clothes/snacks with me. The Knack large expandable bag fits like a sleeve inside the expandable compartment and there are a few pouches in the front compartment for small items (key/wallet). I think a key loop attachment would have been helpful but I just put my key fob in the pouch. The back is very breathable and the strap and buckle are high quality. The buckle has a satisfying click when you snap it. I wear this as a sling over the shoulder but it could be used in other configurations like around the waist.

Researched and decided knack was the one and it is a great solution for my needs! Great quality and love the expandable compartment! Update after a few months...... This pack is perfect for what I wanted! It is designed well and works perfect for a daily carry for me as well as a single bag for overnights. Storage is well thought out!

I got this to carry around during a business trip/trade show. I had it delivered to my hotel and I spent the evening exploring the backpack. I absolutely cannot believe how much you're able to do with this backpack. I even made a couple gasps when I discovered yet another pocket or another cool thing, especially when I found the zipper to expand its size. Super functional, and can fit so much in it when needed, but can be made more compact when traveling. I would say that it is worth the investment, for sure.