Bulk Pack for Creatives: Receive 30 high-quality MDF sublimation coasters, each with a cork backing, perfect for personal projects or as gifts. With ample quantity, unleash your creativity on these 3.86x3.86 inch coasters, ideal for both beginners and seasoned crafters. Optimal Size for Sublimation: These square coasters are not only perfectly sized at 3.86 inches for easy handling and storage but also come with a 4mm thickness that ensures durability and a substantial feel. Ideal for achieving heat transfer prints. Superior Material Quality: Crafted from premium MDF hardboard and backed with cork, these coasters offer a reusable, sturdy base for your sublimation needs. The high-quality coating ensures that your images come out bright and clear, enhancing product. User-Friendly Tips for Best Results: To achieve the best sublimation results, remove the protective film on the white side before printing. For optimal transfers, use a heat set between 355-375℉(180-190℃) for about 60-70 seconds. Versatile Use Cases: Perfect for personalizing with any design, these coasters make excellent gifts for loved or as custom products for clients. Their quality and appeal make them suitable for scenarios, from home use to professional settings. Colour:As Shown Material:cork Package Contents: 30 * coaster Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.