my new one bag, 20L for travels up to 2 weeks. two bottle holders with extra support, can pack 1.5L x2. plus isothermal bottom section for food. Decathlon. : r/onebag
Quechua Backpacks
Decathlon Quenchua Hiking Backpack 30L NH500 Details - One Bag Travel
Quechua Decathlon Kids Adults Outdoor Backpack Daypack Mini Small Bookbags10L (Mint/New) : Amazon.ca: Sports & Outdoors