Black base phone grip. Each phone grip comes in a plastic wrapper with a blank sublimation disc.
Sublimation discs measure approximately 1.5 inches. Discs come with a clear film on them - peel off film prior to sublimating.
Suggested Temp to sublimate discs is 390 degrees Fahrenheit for 60 seconds using light-medium pressure, depending on your heat press you might need to adjust those settings.