This 7 business day buffer is not a guarantee of time-frame for the release of packages. The adidas Yeezy Quantum Barium This charge is determined by the recipient country's government. Materials on the adidas Yeezy Quantum Barium sneakers The primary materials used in making the Yeezy Quantum Barium are genuine suede and rubber. We will however happily replace damaged, defective, or incorrect items. Both of these transit times are from when the order leaves our production facility which can take up to business days. The Quantum Barium sneakers feature subtle performance improvements within a shell of woven construction.