Easy to use-These heat shrinkable caps are very easy to use. If you 't have a professional heat shrink machine suitable for capsules, you can use boiling water. Use-To fix the bottle in your bottle, you need to heat it to shrink it. This can be done in kettle or using a high-power , or in a quick and easy way. Boil a pot of water and allow it to cool down, up the bottle and prepare it, then pour the bottle onto the kettle with a long knife, and then pour the bottle into the water for 2 seconds. can find the lid. perfect. Professional appearance- a heat shrinkable cap to the bottle, no matter where you use it, it can show a professional appearance. Uses: food Thickness: 0.1 (mm) Tensile properties: good Production process: calendering packaging: wine, beverage packaging size:32mmx60mm Material:pvc colour:wine red Package Contents: 100 x red wine hats Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.