This overnight bag is super popular for good reason. It's functional, foldable and looks pretty cute, too.

It's waterproof, lightweight, has mega separate storage compartments, wear-resistant, load-reducing, dry and wet separation and comes with a luggage belt.
 
Product Information:

Capacity : 20-35L

Bag internal structure: zipper dark bag, sandwich zipper bag

Material: Oxford cloth

Number of straps: Three

Lifting parts: Soft handle