The RNIB PenFriend is a simple and easy-to-use labeling pen that enables you to record your own self-adhesive voice label on a wide range of items in and around the home, at school and at work. Pack of 48 self-adhesive rectangular labels, each measuring 3cm by 2cm (1.1 by 0.8 inches). Only use one pack of each labels. No ironing or stitching required. Should be applied to the care label. Suitable for use in washing machines, tumble dryers and for hand washing, each label will withstand 50 plus washes up to 50 degrees (wait for seven days before washing to allow adhesive to set). Not suitable for dry cleaning. Labels should be used within six months of opening. Please note: We highly recommend that laundry labels are attached to the clothes tag that gives information about the item. This will ensure the adhesive fully sets.