>>2310688I love them and hate them at the same time.
For most of my summer hikes I use a Decathlon fanny pack (pic related) which holds 2x500ml soft bottles, and I'll also take an ultralight pocket backpack. If it's a really short hike I'll just take the fanny pack. It's good but not ideal: if it were slightly larger I could stuff some kind of outer layer/windbreaker in it.