The Owlcrate Monthly Enamel Collectors Pins for the years 2023, 2024, and 2025 are a series of small, multicolor lapel pins featuring designs related to books. Made of enamelware and metal, these pins are perfect for adding a touch of literary charm to any outfit. With a compact size of 1.5 inches in length and weighing only 0.8 ounces, these pins are ideal for collectors and enthusiasts looking to display their love for books through decorative accessories.