I bought this costume for a party, and was very excited to receive it, but my enthusiasm quickly faded when I tried it on. I bought the XXL as I'm ~260lbs, but the jacket was very small. I also couldn't get the ties for the waist of the pants to meet up to tie them properly. The arm guards had barely enough elastic to fit around my wrist and mask was huge. I was able to modify it to work, and took the advice of another reviewer and bought the proper size regular jacket to go along with it. I also ended up cutting out the elastic on the arm guards and using shoe laces to hold them up. As for the mask, I used safety pins to hem the seam, but as a longer term fix, I might cut apart and re-sew it with better shaping. All in all, it might work better if you are a skinny ninja, but the accessories should be one-size-fits-all, but are one-size-fits-none.