Promena Promena is a shoe manufacturer specialising in indoor and light industrial shoes. It supplies to commercial kitchens, offices and electronic manufacturing locations. Promena manage their production using a high response time make-to-order process which is operated by Manu Online. Because of the high number of product variations caused by size, colour and model, only a limited product range can be kept in stock, and the bulk of orders are made to demand. Manu Online implemented a “work order size of one” philosophy which despite the low value/high volume manufacturing allows Promena to make just the product that the customer wants, when they want it.