It says up to 15kg
I haven't weighed my daughter since she was 2.5 and she 15kg then, she's now 3.5 and tall for her age too. I still put her in the trolley seat because she asks
But it's getting the point where I'm thinking I'll have to say no, maybe when she's around 4
What are others doing? I talked to a friend a while ago with a child the same age and she said she hadn't even thought about the weight limit