I was trying to use my google-fu to try and help you find a product when I stumbled on this site:
The Leather Rod Pouch is a premium welding rod bag designed for both functionality and durability, crafted from 100% cowhide leather with Kevlar stitching for unmatched strength and flame resistance. This stylish brown leather pouch securely holds up to 16-inch welding rods and can carry up to...
mapleweld.ca
Who the heck approved this product photo?
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Would a tool belt harness that has a chest strap maybe work? Something like this...
Tourbon Leather Carpenter Tool Belt with Suspenders for Men Padded Heavy Duty Work Harness Electrician's Combo Construction Framing Bag - Amazon.com
a.co
You could attach a conventional rod bag to the cross ******** your chest. Might sit a little high though...