The HYCO Pleated Tote Small in Black from Côte&Ciel, Paris. 

Details
The compact version of the HYCO is a perfectly ergonomic crossbody bag. It follows the natural contours of the wearer’s body in a wrap-around way. The HYCO S has one main compartment secured with a water resistance zipper and leather puller containing two rounded internal security pockets. A pocket is embedded in the HYCO’s strap at chest height, which can safely store a mobile phone or a travel card, for example. The bag also features a ring clip that can be used to attach accessories like the LetGo keychain or eyewear pouch. It is made from a unique ‘Pleated Black’ fabric that is soft to the touch with a matte finish.