Check out the great deals at Under Armour, where you can get select backpacks for 25% off — no promo codes are needed. Prices start at $22.50, originally $30 or more, and there's a wide variety of styles and colors to choose from.
My personal favorite is the Hustle Play Backpack for $26.25. Per the description, it's small enough to use daily but big enough to hold everything you need, plus it's water-resistant. This sale lasts through Aug. 2, so don't miss out on these awesome savings.
For similar offers and more, check out these back-to-school deals.