48oz Silo Cosmo, Sustain Accessories Color:Cosmo The BIRKENSTOCK Siena boasts a

The BIRKENSTOCK Siena boasts a refined

An easy-access folding change mat stows in a custom compartment and there is plenty of integrated storage for the essentials

-access side pocket for effortless carrying through the city

Travel anywhere with confidence

the Cargo Satchel has the versatility

48oz Silo Cosmo, Sustain Accessories Color:Cosmo The BIRKENSTOCK Siena boasts aMore volume for more adventures. 48oz of BPA BPA free Tritan Renew, our new material derived from 50% waste plastic (using ISCC certified mass balance). The classic Nalgene Wide Mouth bottle with expertly crafted threads for leak proof hydration and perfect for ice cubes or fruit infusions. Proven in the elements and ready to withstand even the most rugged conditions. A pioneer, for pioneers. Durable, built to last, and Made in the USA. Features: BPA