Unbelievable find here straight from a friend of Bob Maki hanging in a back room of his barn. Story goes he applied for patent in 1974 received it in 1975. Made from inner tubes of mining equipment. From the Upper Peninsula of Michigan in snow country! Yooper history! This is special rubber that will not crack Have never seen another pair of these. These probably should be in a museum or a collection as found barn fresh condition. Would be awesome on a vintage pair of snowshoes as well Told they were never used. Will let winning buyer clean as desired. Rare Vintage Patent pending Bob Maki Snowshoe Bindings Painesdale Michigan USA.