Birkenstock Innersole Birko Contact Sport Blue Size:39 The upper is made from

The upper is made from hard-wearing synthetic material Birko-Flor®

8 and 3mm thick

FOOTBED - Balance Comfort

yet soft material

Birkenstock Innersole Birko Contact Sport Blue Size:39 The upper is made fromBirko Contact Sport Innersole in Blue The Birko Contact Sport Blue offers full length arch support and is anatomically shaped and cushioned to help reduce stress on the knees, spine and hips. The semi rigid EVA shell is flexible and waterproof. The latex microfiber top aids in shock absorption and moisture management. Provides moderate balanced support for all arch types. Best worn with athletic shoes and work shoes. Can be trimmed to fit.