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Both sizes are made of high-quality 304 stainless steel (18/8), are double-wall insulated, and leak-proof. The difference lies in the size and intended use – here you can see at a glance which bottle suits whom.

Both bottles fit in the side pocket of a standard backpack
350 ml 500 ml
Capacity 350 ml 500 ml
Insulation Up to 12 h hot / 24 h cold Up to 12 h hot / 24 h cold
Best for Kindergarten and primary school children – handy, lightweight, and fits in most school bag side pockets. Older children, sports days, and long outings – more volume for the whole day on the go.
Material 304 stainless steel (18/8), double-walled, plastic-free 304 stainless steel (18/8), double-walled, plastic-free
Closure Two leak-proof lids (screw & flip-top) Two leak-proof lids (screw & flip-top)
Care Hand wash recommended Hand wash recommended

Can't decide? Take a look at all KiNDKiT bottles at a glance.