January Double Collar Mock ShirtA mock collar with delicate organdie detailing, for bulk free layering, produced in small, considered batches January is a collar insert cut in a bib shape, designed to elevate everyday layering. Featuring a double layer curved collar, with the underlayer crafted from 100% cotton organdie sourced from a heritage Swiss mill, it creates the look of a crisp shirt without the bulk. Refined and distinctive, it slips seamlessly under knitwear or tailoring