Telltales are made of lightweight, durable, and smooth Dynakote 75 Polyurethane based Silicone Coated Nylon Spinnaker Cloth. They fly well even in the slightest breeze due to the super slippery surfaces. By sandwiching the leech with the gourd-shaped patch tape, the leech telltails sit off the back of the leech of the sail, instead of the side, which enhances its performance. The ribbon is already attached to the patch tape, so it’s easy to apply – Just clean, peel, and stick it. Large generous self-adhesive stickers with central telltale exit ensure telltales stay on in any condition. The ribbon is cut by a laser to heal-seal the cut surface, making the ribbon fray resistant and durable.