These are glass ornaments with a slight frosted coating. It is coated for sublimation on the back side.
There are 3 shapes available, round, square and heart.
The round and square are 3.5".
The heart 3"x 2.75".
They have a beveled edge and you will want to make your lettering to fit inside of it. Consider the beveled edge area to be the "bleed" area and should not be where your printing is as it will not come out as dark as the rest of the ornament.
This is a blank ornament. The pictures with designs are for examples only and are ones I have pressed myself.
PRESSING INSTRUCTIONS -
DO NOT mirror your image. Use a felt nomex pad, pressing pillow or soft towel underneath to help with pressure.
400 degrees for 130 seconds with light pressure. Too much pressure will crack the ornament.