Bag by Sisley, For those must-carry essentials, Fully lined, Twin handles, Adjustable strap, Press-stud fastening, Zip closure, External 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.