your sheets only lasted 4 years? I still use the ones I had most of my childhood..they are on my sons bed now..ok just the top sheet, but I found a bottom to mathc on ebay..or rather my mom did
My bed is now a queen, but for four years we had a full sized, we used the same sheets my husband had when he was a kid... (he got a full sized bed in is younger years..not a twin, so we just ekt using em.)