Waterproof trousers for a slim three year old boy

[MrsMarigold]

Not really a style item but I want to buy some and want recommendations. That muddy puddles website keeps crashing on me. Anyone got any from an ebay shop or elsewhere? Were they really waterproof? Were the seams sealed? Thanks in advance.

I bought some through amazon for ds and dd (5&3). They were dry kids branded ones.

One wear and they had holes and serious signs of wear and tear on the taped seams.

Thankfully the amazon seller gave me a full refund.

But I'm also on the lookout for some decent trousers.

Ds had a muddy puddles waterproof suit when he was little. It was great but eventually disintegrated with too much farm yard muck which should have been washed off sooner I think!