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 NH Arpenaz 100 20 L Hiking Backpack | Decathlon
Quechua MH500 20-Litre Backpack Review: The Ultimate Day Pack for Hiking and Backpacking - YouTube
DECATHLON - 20L Quechua Arpenaz Backpack - general for sale - by owner - craigslist