Oil-Tanned Leather – S.B. Foot Tanning Co. is best known for oil-tanned leather which is used to build a variety of timeless Red Wing styles. This leather is water, stain and perspiration resistant, and has a more natural look and feel because less finishing materials have been applied, allowing its natural beauty to shine through. Oil-tanned leather is exceptionally durable and has been used to build countless work boots throughout Red Wing's 108+ year history.