Altra’s signature FootShape™ toe box that lets your toes relax and spread out for incredible comfort and freedom

Handmade in Kyrgyzstan using wool from local

the customer will be responsible for cost of the return shipping label

the Altra EGO™ midsole is a touch firmer for extra energy return and response

After over four years of development

Retro Oso Flaco mens Altra’s signature FootShape™ toe boxFor those who demand the best in performance focused minimalist footwear that can handle the BIG adventures, the Oso Flaco is super attractive. Using our specially developed Vibram Megagrip studded tread, we've built a sandal that can handle the complex world of real adventure: mountains, rivers, trails, mud.