Colourful rucksack recommendations with side bottle holder

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I'm looking for my perfect rucksack!

• Preferably colourful.
• Side bottle holder.
• Big enough to hold a packed lunch, a lightweight raincoat and a small toiletry pouch (pads, lip balm etc).
• Waterproof.

Budget £100 😊

We all use Roka bags in our family, I like them!

Fjallraven bags come in lots of bright colours. Over budget though.

Agree with Roka recommendation

Have you seen the Cotopaxi ones? Lots of styles