High Density inks give extra dimension to your design and make your art literally pop off the garment. We utilize this technique in conjunction with spot color art, and it leaves a physically raised, 3D imprint, that enhances the overall look. Puff ink is similar to standard ink in viscosity and printing characteristics. What sets them apart, is that they contain various blowing agents. These agents release air when exposed to heat, causing the ink film to swell or puff.