Poppy Crafts Heat Transfer Puffy Vinyl - Glow In The Dark - Yellow/Green. This glow-in-the-dark heat transfer vinyl begins as yellow and transforms into a captivating green hue when the lights go out. Puffy Heat Transfer Vinyl is a specialised material designed to create a dimensional effect when heat-applied. Upon heating, it expands to create a soft, foamy texture, providing a unique 3D appearance. The recommended temperature range for application is between 140°C to 150°C, with medium to firm pressure applied for 8-12 seconds. When peeling, it's best done while warm. For laundering, it's advisable to wash inside out with warm water (maximum 75°C) and avoid tumble drying. When ironing, do so inside out, refraining from direct contact with the transfers. Layering is not recommended for optimal results. Available in a range of different colours, each sold separately. Sheet Size: 10" x 12" (25cm x 30.5cm).