Hey mama, I have a large prestons pants..its orange but its dirty on the bum..my son wore it outside in the sprinkler and it got dirty when he plopped down. It's been washed, just a stain. I could send it to you with 2 microfiber inserts for like $3 to cover shipping. Other than the stain there is nothing wrong with it. The prestons pants Larges are big! My almost 2 year old is still on the inner most snap and the rise is great.
Also, fuzzibunz made sized diapers you could probably find some on fsot for pretty cheap that would fit him!!