Packaway Day Sack Recommendation please

[norma1980]

Looking for a day sack for holiday day trips I can packaway as only taking on carry on luggage.

Needs to be decent size as have 3 kids so will have raincoats etc

Waterproof if possible please

Saw this one https://www.lululemon.co.uk/en-gb/p/packable-backpack-32l/150100226.html?CID=GooglePMAXXUKNATTENXXHYBRIDUNISEX-CATCH-ALLLGENY23&gaddsource=1&gbraid=0AAAAADs7z2vqyMrUQlN6SJGIMTEJCEqWg&gclid=CjwKCAjwnK60BhA9EiwAmpHZw7dmz6Rwd40YOFYYyCj-thYgSNEOE09chB8xw4eRxHVXZ8ZQUvkUaxoCXbIQAvDBwE&gclsrc=aw.ds

Just wondering if anyone had it or any thoughts as it is more than wanted to pay and not sure if waterproof but happy to pay it if good

Notabag? Can be a rucksack or a tote
Lightweight but strong

Similar looking £28
https://uk.gymshark.com/products/gymshark-pursuit-tote-black-ss24?gad_source=1&gclid=CjwKCAjwnK60BhA9EiwAmpHZw5I0r8dV5chTwwiL-KEvgg8gShAsT5PYvUYqTL0CJh1kuc_mIRzuvhoCoCMQAvD_BwE&gclsrc=aw.ds

Tha is @Shybutrude I'll take a look I
hadn't heard of notabag before

I have pack away bags from Decathlon ( and Disneyland as it happens)

They have loads of different sizes and are very handy

The Tote bag I use when shopping has various sized foldaway bags that come out like a Mary Poppins carpet bag