COMPLETE SET: Includes three 3D-printed sea urchin hats - a sporty blue Baseball Hat, a regal golden Crown, and a cozy red Beanie for your underwater pets. PERFECT FIT: Each hat is crafted to sit snugly on your sea urchins with a universal 30mm diameter design that ensures comfort and stability. WHIMSICAL DESIGN: Transform your sea urchins into the most stylish creatures in your aquarium with these fun, photogenic accessories. CONVERSATION STARTER: Make your reef tank the talk of the tide with these unique decorative pieces that add personality to your aquatic display. REEF-SAFE CONSTRUCTION: Specially designed to be safe for your sea urchins and compatible with your existing reef environment. Bring fun and flair to your reef aquarium with the Printed Reef Sea Urchin Hat Set—because even sea urchins deserve a little style! This charming 3-pack of 3D-printed mini hats includes a sporty blue baseball cap, a regal gold crown, and a cozy red beanie, each designed to fit most sea urchins with a 30 mm diameter. Made from reef-safe PETG plastic, these hats are completely safe for saltwater environments and won’t leach harmful chemicals. Whether you’re taking photos, creating viral reef videos, or just adding personality to your cleanup crew, these miniature hats will instantly make your tank more entertaining and unique. Designed and printed in the USA by Printed Reef, a small, family-owned brand known for innovative 3D-printed aquarium accessories that blend humor, creativity, and reef safety. Give your urchins the royal treatment and let them rule your reef with style!