Different shapes: package comes with 16 pieces of sublimation blanks keychain in 4 shapes, including 4 rectangular, 4 round, 4 square and 4 heart shape, the and style are sufficient, enough to meet your . Durable to use: these blank keychains are made of quality PU leather, soft to contact and light in weight, with a sublimation blank surface on one side and black polyurethane leather on the other side, , durable and generous. Sublimation process: these keychains are made by sublimation process, the front is blank, the heating temperature is 356 degrees Fahrenheit/180 degrees Celsius, and the heating time is about 50 seconds, you can design the style you need on the blank side. Measurement: the heart shape is . 6 x 5.5 cm/ 2.36 x 2.17 inches, and the round shape is 5cm/ 1.97 inches in diameter, the rectangle shape is 3.5 x 7.5 cm/ 1.38 x 2.95 inches, and the square is 5 x 5 cm/ 1.97 x 1.97 inches. Meaningful handmade gift: you can print pictures of yourself, family, friends, pets or your favorite beautiful scenery on the blank side of the keychain, and make souvenirs for yourself or others, they will be surprised when received this gift. Colour: black + white Material: PU Package Contents: 16 * sublimation blanks keychain (square, rectangular, round, heart-shaped 4 each) Only the above package content, other products are not included. Note: Light 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.