My 5 year old son wanted to be a ninja for Halloween and I was having trouble finding one with decent reviews, and that didn't have a million sashes we had to tie everywhere. This one is perfect. He wears a 5T pant and a 6 shirt and the size 6 fits him very well. I think he'll be able to wear it another year and had no trouble bundling up underneath it for trick or treating. It's a 4 piece set so not many parts to lose. My son just needed help tying the sash around his waist and getting the mask on right. The mask has two pieces of elastic attached with velcro and it stays in position very well if you put them right side up. Not hard unless you're an excited 5 year old. :) We're very happy with it and it will definitely become part of the dress up rotation. The gold material on the top makes it stand out nicely from the many other ninjas we saw this year.