>>683125It's not too big when opened up, should fit onto most packs.
It weighs 0.45KG overall as well.
I haven't began using it for charge yet, it's night time now, but I'd already recommend it if you have electronics you need to keep charged while out. Especially for touring and such. It's really light and folds up very compact that it should slip into the tightest of packs.
