These chaps are designed to protect a chainsaw user in the event that the chainsaw comes in contact with the users legs. We do not recommend any other use.
The Chaps are machine washable with standard detergent.
These chaps are open on the backside and use clips/straps to tie to the legs. The crotch is open underneath but covers in the front.
Yes the waist band and leg bands are completely adjustable
This is made in China
Yes they should fit fine!
I have used them with electric, battery and gas chainsaws. They are personal protective equipment, not sure why they would say not suitable.