This heart-shaped 3D item is printed with UV Resin; a transparent gel material which hardens when exposed to Ultraviolet rays. The clear gel has been pigmented to give a distinct colour. The item should be kept away from high temperatures and open flames. We have a wide variety of transparent and opaque colours to choose from, and come in different sizes and thickness. To make the item abrasion-resistant and non-rigid like most UV Resin products, for a small additional charge, we can also print the item using flexible resin. If you have any other requirements for your heart-shaped keyring, get in touch with us.