These have a feint black line on one side, some more than others, if usining a dark picture it would cover it, they can also be used for mock ups as the mark is only on one side.
100% polyester canvas
Colour - bright white only
The suppliers recommendation for sublimation are 180C for 40-50 seconds
**When pressing please use a silicone sheet, parchment paper or a towel inside to prevent sticking**
Please also provide your customers with care instructions and advise that they us a parchment sheet or similar inside if they wish to iron their cushions. This will prevent the insides of the cushion cover sticking together.