Set: Our shrink paper the for endless projects Fun Heat Paper: Our printable shrink paper are made of Metal material, translucent, frosted on one side, easy to color, and can shrinking to 20% of the size after heating. You can color the pattern directly or create your like pattern in the blank space Ideal Dimensions: The size of our heat shrink plastic sheets are 20 cm x 14.5 cm (7.9 in x 5.7 in) and the thickness is 0.3 mm. Printable shrink film suitable for playing with children in the classroom and . It must be used under adult supervision when heated How To Use: First draw your like pattern on the frosted side of the shrink paper keychain kit, then color it and cut it out with scissors, and finally place it on parchment paper or a cookie baking tray, preheat the oven to 150℃~165℃ (302°F~329°F) and bake within one minute Note: Be careful when using an oven or a hot air to shrink film to avoid . Keep the of the heat shrink paper clean when heating. The plastic sheets inevitably bend during the shrinking process. You need to them gently with glass until they return to their normal shape while still warm Colour:As Shown Material:Metal 146 Pcs includes: 20 shrink plastic sheets, 100 split rings, 5 lobster clasps, 5 key chains, 10 bead chains, 5 ear hooks, 1 hole punch Package Contents: 1 set x sheets 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.