That's the chainsaw bra from Blue Ridge Overland Gear.
https://www.blueridgeoverlandgear.com/The-Chain-Saw-Bra-p/21csb.htm
All their stuff is American made, coming out of their shop in Bedford, VA. I'm sure many of the gang there are members here. Matt from there is involved with
Mountain State Overland, and you can see him presently on their YouTube series, with a new episode tonight. Adam is a buddy of mine that went to work with them. He's OB 4054. You won't go wrong with a product from them!