They weren’t around when I was a kid. They didn’t come out til I was like 15 years old and was already dry by then. I probably would have worn them if they were out earlier. Would’ve made my bed wetting issues easier to deal with, especially at sleepovers and Boy Scouts camping trips.
My only protection was vinyl backed cloth pads under my sheets among with plastic mattress cover. After I wake up wet in the middle of the night, I go to the bathroom to take off my wet pajamas and underwear, grab a bath towel, lay the towel over the wet spot, put on clean underwear and pajamas and go back to sleep. My mom would just take care of the laundering in the morning.