I have been looking for used bogs locally and haven't found them... these are an ugly color IMO but I think DS will like them.
https://www.rei.com/rei-garage/produ...ain-boots-kids
SD said code EXTRA20 for 20% off but that one didn't work for me - I used OUTAUG18 for $10 off.
editing to add: I looked closer - the $10 off code ends today and EXTRA20 starts on the 24th.