My son wears 2t and the 2t winter trousers fit him perfectly. I ran it under the sink to test the waterproofing and absolutely nothing held up. They aren't super thin so I think they would be perfect for winter. I thought the straps looked cheap when I first bought them, but they're actually pretty sturdy and look nice. The ratchet straps don't come loose easily either, so you won't have a problem with them falling off your shoulders. I will update my review if anything changes!
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