Birkenstock - Birko Active Insoles - Black gray a textured synthetic upper and

a textured synthetic upper and microfiber footbed lining give it a vegan spin

Lining: 48% Wool Merino

Birkibuc® synthetic upper

Footbed: 0

Cork/latex footbed lined with vegetable-tanned leather

Birkenstock - Birko Active Insoles - Black gray a textured synthetic upper andBirko Active, the breathable 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 activities Breathable mesh