Development of computer technology and the Internet has made mass customisation of products more common in fashion design of today. Development in production of knitted garments has made it possible to make garments ready made, directly in the knitting machine. The objective of this article is to present a design, production and shop model for the ‘‘Knit on Demand’’ concept and to show how the complete garment knitting technology could be used for customised products. A business model with production equipment located in store is presented. Customers are involved in the design process and garments are customised to fulfil actual demand. A lead time simulation of design and production processes in the shop concept is presented. Simulation in the software tool AutoModTM shows that the customer could have a self-designed garment in two to five hours.