We are able to get leather cambium savers from Lighthouse Leather in Maine. Their website is:
http://users.aol.com/smscott/inv.htmFollow the Lighthouse Leathergoods _link_ to tree climbing. I use the 24" 8-10 oz (thickest available). 5" refers to the raw size of the leather. It is sewn into a tube and riveted at the ends (for another 1$). After I get the savers, they are straight. I wet them and place them over a piece of garden hose in a soft arc and slowly dry them so it retains it soft curve.
The phone number is on the website. If you call, ask for the item that he made for Dick Flowers. This is the best one, in my not so humble opinion.
These leather savers set without much difficulty, as light, and don't cause nearly as big a bump on your head if you take one.
Bob
Tree Climbing for All
www.arborquest.org