Bag by Sisley, For those must-carry essentials, Adjustable body strap, Flap top with magnetic fastening, Inner zipped compartment, Interior zip pocket. Since its French debut in denim in 1968, Sisley has become known for its casual-chic attitude. With a philosophy centred on design-led classics, tailoring, jersey tops and knitwear join the ranks in interesting fabrications and cute cropped cuts.