Montana Bow Sling $40 TYD
THIS GEAR ROCKS! Easy-on/fast-off, bow rests under my arm comfortably in transit. hooks dangle out of the way when not used. Used them the last two seasons of my elk career, and now have to give up the mountain hunting.
Not sure what is beneath the fabric. They are rigid, and light-weight compared to their value. I bet you could comm with the guy who makes them. I’m sure he’s help you.