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. 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 press set between 355-375℉(180-190℃) for about 60-70 seconds. 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. 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. 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 various scenarios, from home use to professional settings., Manufacturer: Tuidzljd