These are straw sandals purchased at Osorezan in Aomori Prefecture, a famous spiritual site. They have a pleasant scent of straw. I was told by the shopkeeper that if I were to wear them, I should put force on my toes when walking, but I haven't worn them. At Osorezan, they seem to have been used for memorial services, tied up as shown in the fourth photo. Brand new, unused. Warazori (straw sandals) Sandals Footwear Ornament Cursed object Memorial service