United Kingdom
Two years ago at Glastonbury we thought we were prepared for the rain and the mud. That was until it came and the whole area was turned into a lagoon and we realized our waterproofs were nothing of the sort.
Taking shelter in one of the Oxfam shops we found some rubber overalls with elasticated arms and legs and hoods. I'm not sure what they're meant for, maybe chemical spills, but we bought them and oh, what a joy. Warm, wipe clean and waterproof, we could sit anywhere, lie in the mud, dance in the rain, and be clean and dry when we took them of at the end of the day.
I'm not too sure - probably big DIY stores or builders merchants.
Search Been there