Boston fit improvement. I have quite narrow feet and these inserts, though not ideal (minor sticky separation sound when you lift off while walking) have made them functional to use. They otherwise
Amazon.com: Birkenstock Men´s Inserts Black 00 Sandals 41 EU (M8/L10 US) M 020402 : Health & Household
Birkenstock Arizona Soft Footbed Navy suede Womens Slide Sandals 1020716
Birkenstock- Arizona, Ginger Brown
Footwear & Insoles
Birkenstock- Arizona, Beryl
Footwear & Insoles
Comfort Insole Microfiber Black | BIRKENSTOCK
I'm a footwear expert - how to clean your Birkenstock sandals for summer and get the brown insoles looking new again | The Sun
Insoles | shop online at BIRKENSTOCK
Birkenstock Birkosport Arch Support Insoles- Men'S 12-12.5: Amazon.co.uk: Fashion