HTV stands for Heat Transfer Vinyl, where vinyl is heated to temperature and it then adheres and sticks to the material.
It comes in a variety of finishes (Glitter, Patterned, Glow in the Dark, and Metallic) and can be used by cutting with a pair of scissors, or in a machine like a die cutting machine and cutting dies, or with a computer controlled machine like a Silhouette Cameo or Circuit Maker.
Comes with full instructions and a sample so you can try it out in your machine to get the settings correct (for any help on settings please email: firstname.lastname@example.org)
HTV comes in sheets, and half metres for large projects.
There is little to no waste on this product as even the little bits can be cut up and used!