Buy the adidas Excel 6 School Backpack.

It carries everything the duffle does and protects the one thing the duffle cant: your laptop.

What was compared

1. Thousands of owners already vouch for it
The adidas Excel 6 sits at 4.8 stars across 6,784 reviews, while the UA DuffleDISC has only 121. Research on Under Armour as a brand also flags widespread complaints about quality and service, a risk you are not taking with the adidas.
2. Only one of these protects a laptop
The Excel 6 has a padded sleeve for up to a 15 inch laptop, built for school and work days. The UA duffle has zero laptop protection, so if you ever carry a device you are putting it loose against gym shoes and clothes.
3. A bag built to actually organize your stuff
40L with multiple organizer pockets and water bottle pockets beats the duffle's single main compartment plus one zip pocket. Unless all you ever carry is a change of gym clothes, that is real daily chaos the duffle cannot sort out.
4. Backed longer if it fails
Adidas lists a lifetime warranty on the Excel 6. The UA DuffleDISC page makes no such promise, so a broken zipper or torn seam is your problem alone after the Under Armour return window closes.
5. Yes it costs more. Buy it anyway.
The UA duffle is cheaper at $13.59 against $49.00, but it is a single-pocket gym bag with a much thinner review record behind it. Unless you only need something to throw a yoga mat and sneakers in, that gap buys organization, laptop safety and a warranty you will actually use.