Birkenstock Birko Active Insole (Unisex) - Black Keen Lining with hydrophobic/hydrophilic 2-zone comfort

Lining with hydrophobic/hydrophilic 2-zone comfort technology

work boots

Tonal Leather trim

Don't mess with the Austin

Made with durable three section 7075 aluminum

Birkenstock Birko Active Insole (Unisex) - Black Keen Lining with hydrophobic/hydrophilic 2-zone comfortBirko Active Outdoor Fun, the breathable footbed insole for mens and womens shoes, combines the insoles of conventional footwear with the anatomical shape of the foot. The foot is supported and guided during walking and running. The shock absorbing material core ensures outstanding comfort on foot, be it in hiking shoes or casual shoes. Anatomically shaped full length footbed with flexible, shock absorbing forefoot Additional support for sports