I've just had to retire a pair of Dunlop wellies I've had since 1993 due to cracking across the bridge, though I must admit they were getting a bit uncomfy, but they have done many miles of exploring.
I now wear my leather Zamberlan walking boots with 4mm wet socks and they are very comfy,and of course don't fill with water in deep sections like the wellies always did, should have done this yonks ago.
I will not be going back to wellies again.
The management thanks you for your co operation.