W Whiskey 1 Inch (1") Size International Maritime Code of Signal Flag Letter, Made of Mylar, Self-adhesive, High Gloss Letter, Available in the Complete Alphabet W Whiskey 1 Inch (1") size, International Maritime Code of Signal Flag Letter Made of mylar, a form of polyester resin used to make heat-resistant plastic films and sheets. It is made by copolymerizing ethylene glycol and terephthalic acid. (Oxford dictionary) Self-adhesive, high gloss letter is easily applied to boats, cars, luggage, note books, equipment. Waterproof, weather resistant durable finish, ideal for exterior use. Available in the complete alphabet Shipped only in the USA with Tracking Number by USPS *****First-Class***** Package Service from our California warehouse. Usually, US customers should get your item(s) within 7 business days. Superb quality products and friendly customer service. Simply respond emails within 11 hours. ^V^