Madrid Big Buckle : White Size:42 Narrow It offers an adjustable velcro

It offers an adjustable velcro ankle strap as well as an adjustable toe strap to ensure a secure fit

but it can be used in the Profi Birki 2

Footbed Material: Cork

Now with the full midsole wrapped in suede

Upper Material: Suede/Nubuck

Madrid Big Buckle : White Size:42 Narrow It offers an adjustable velcroFirst made in 1963, the original Birkenstock exercise sandal remains a popular favorite! The Madrid is designed to exercise the foot and lower leg as you wear it. Your foot will flex and grip the toe bar while walking, thus promoting good circulation, building strength and helping to prevent injury. Brand: Birkenstock Upper Material: Leather Sole Material: Extra thin EVA Footbed: Solid cork with leather lining Arch Support: Maximum Made in Germany