Built-In Heel Grip for Secure Fit

Adjustable Buckle Strap

so we recommend going with your normal size

Adjustable Velcro Straps

BIRKENSTOCK SYDNEY CUSH MARY JANE Built-In Heel Grip for SecureThe Birkenstock Sydney Cushion is ideal for summer holidays, all day comfort and support. FEATURES: Anatomically shaped Birkenstock corked latex footbed Footbed Lining: Suede Leather Upper: Birko Flor (Synthetic) Made in Germany FIT TIP: It's important to measure your foot accurately to find the right size shoe. To work out the size and width you will require, please follow these steps: 1. Measure the length of your foot by standing on a flat surface