Materials for labels and stickers alike:
Paper, Uncoated: Use where you need the label to be easily written on by hand or printed on by machine.
Paper, High Gloss: Use when you need good printability. Keep in mind that it cannot be written on easily by hand.
Vinyl: Use vinyl for outdoor environments, or if applying a label to a vinyl surface.
Acetate: Use when the label needs to be transparent.
Mylar/Polyester: Best for applications where the label needs to be applied to an object with sharp, angular corners.