It depends on the item and the transfer type you chose. On softshell, there is often a problem of color bleeding of support tye through the transfer, especially on black and red items. You must imperatively make the following test : apply the transfer at 130°C for 25 seconds and place it near a heating source (radiator, sunny place...) for several days to speed up this possible phenomenon. If you don’t notice any color change in the following days, you can reproduce the application on your other materials. If you notice a change, then, the chosen screen-printed transfer is not adapted.
Our SubliStop transfer was especially made to avoid the possible sublimation raising that can be observed on softshell and sublimated polyester clothes. We recommend you to opt for this sort of screen-printed transfer.