Mrs Growster bought me one of these several years ago, and while it's a bit of an ugly brute, it is perfect for anything up to a club hammer, or even an electric drill, but you can use the pockets for secateurs, string, scissors etc, and it'll never wear out!!
I also use it when up a ladder to prune the high stuff, and it's surprisingly comfortable too! (I suppose it should be really, as builders wear them all day)!
I got mine from Travis Perkins...
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