The Biotrainer utilizes all natural materials and evolves traditional running-inspired shoes with a translucent 100% natural latex outsole that is lightweight, cushioned and flexible. The natural latex has been produced in partnership with Lactae Hevea who exclusively use the milk of the Hevea Brasiliensis (rubber tree). After a four-month “winterizing”, spiral incisions are made into the tree bark, which releases the rubber milk without harming the vegetation. The seamless one-piece upper is made of semi-cordovan leather and the supportive heel counter—a feature borrowed from men’s classic dress shoe styles—is made of thick vegetable-tanned leather.
Limited edition of 30 styles cut, available directly with FEIT.
All FEIT shoes are made from start to finish by one master craftsman. The one-piece upper is sewn by hand directly to the midsole. A cork footbed and a bamboo shank stabilizer are added, before cementing the leather outsole to the midsole using a natural, water-based glue. We refer to this process as a modified handsewn Goodyear construction—this method ensures all FEIT shoes can be resoled.
Cordovan leather, historically made from the buttocks section of a horse skin, has been used only for luxury dress shoes. FEIT shoes use the entire skin—hence the name "semi-cordovan”. The leather is tanned slowly, nourished with natural oils, and shaved. A century ago, when horses were still a driving force behind transportation, hides were plentiful. Now they are extremely scarce and difficult to come by. The use of this highly luxurious and elevated skin allows the foot to breathe and because it is much softer, does not require breaking in.
This pair of FEIT shoes comes with an extra set of cork and buffalo leather insoles to assist with in-between sizing. The additional leather insoles can be used alone, or the cork can be inserted underneath the leather for extra padding. If you are between sizes, you can either size up and use the included insoles, or size down and use no additional insoles.