A range of coloured fabrics that can be slotted onto your existing Bloc Fabric Changer headrail in seconds, giving you a fresh, new look in an instant. Complete Bloc Fabric Changer roller blinds are available to buy separately. Please note : the fabric cannot be used unless a Bloc Fabric Changer roller blind has previously been purchased, this is not a complete blind. You can order up to 5 fabric samples, by emailing johnlewis@blocblinds.com. Samples will arrive within 3 days.