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■Size: 0.06 inch (1.5 mm) thick 21.7 x 19.7 inches (55 x 50 cm); Material: 58% polyethylene, 42% synthetic rubber, adhesive (EVA resin); [Features] A sewable bottom plate that can be ironed on. Synthetic rubber has a slightly similar property to top rubber, excellent in terms of processing and balance. This is a general-purpose high rubber that does not affect the texture of the surface and prevents fraying, making it easy to work and create a beautiful finish. [How to use] Adhesive method: Iron on application, Iron temperature: Medium temperature (230 to 150 °C), ironing time: 8 to 12 seconds.
(From Amazon.co.jp)