Both knees and elbows are padded. I would guess the size would be large, here are dimensions. Jacket, Pit to Pit 26", Shoulder seam to cuff 25" Back hem to collar 32. Pants: waist 37" (adjustable smaller) Outside leg, cuff to waist 41" inseam 29.
There is a waist drawstring inside. The hood has some small holes all over maybe from a helmet, don't know see last image where I held it to the light. Third last image shows inside and some printed makers mark, I can make out Napoli.
OK that is all I got, but happy to answer questions if I can, thanks for looking and reading if you made it this far! This item is in the category "Collectibles\Militaria\Vietnam (1961-75)\Original Period Items\Uniforms". The seller is "auldkillieboy" and is located in this country: US. This item can be shipped to United States.