Features Creative Blank Puzzles: Unleash your imagination with heart-shaped jigsaw puzzles that let you sublimate your favorite photos and artwork for a personal touch Complete DIY Set: Each set includes 75 pieces of heart-shaped blank puzzles and bottom plates, measuring 19 x 19cm, for family fun and creativity Ideal Operating Conditions: Achieve stunning results with sublimation printing at 170‑175℃ for 60‑80 seconds with medium pressure, adjustable for your specific machine Features: 1、BLANK PUZZLES: The sublimated blank heart shape jigsaw puzzles can draw pictures, you can sublimate your decorative photos or art paintings on it. 2、SPECIFICATIONS: Includes heart shape blank puzzles and bottom plates, 19 x 19cm in size, each puzzle set includes 75pcs components for DIY fun with family. 3、OPERATING RANGES: Sublimation puzzle printing temperature is 170‑175℃, wait 60‑80s, medium pressure (temperature and time can be adjusted according to your machine). 4、MEMORY KEEPING: You can recall the past during the puzzle process, and each sublimation puzzle you make will retain your valuable memory. 5、SWEET GIFTS: Sublimation puzzles provide warm and sweet gifts for your loved ones, and can also be used as a gift for every holiday to express your heart. Specification: Item Type: Heat Transfer Puzzle Material: Paper Specification: A4 19cmx19cm 75pcs (Approx. 19 x 19cm / 7.5 x 7.5in) Package List: 5 x Blank Puzzles 5 x Bottom Plates Note: This product contains small parts and is not suitable for children under 3 years old, please store in a suitable place. Package List 5 x Blank Puzzles 5 x Bottom Plates