vinylzonecreations 0 Posted September 7, 2019 we have an order for 18 shirts. Just received them and noticed they were all 100% polyester. The directions for poli flex shows blends for temp settings. Will this product work on 100% polyester or do I need to purchase Siser. They wanted them by tomorrow. Thank you for any help Share this post Link to post Share on other sites
Wildgoose 4,200 Posted September 9, 2019 I have only experimented with a small piece of the poly-flex but according to the specs on the USCutter website it is fine on 100% polyester. Sorry for the late answer. Share this post Link to post Share on other sites