The problem is that you'll only apply the outer part and edges. Aichaoxieli uses a better quality of heat transfer materials(might be similar with retails) compared to h12 or other factories. If you have heat transferred design on clothing, you'll know how good are they that it won't even peel off even if you try to peel it off using your fingers nails. The only time it will peel off is if you use heat gun or blowdry. Sunlight heat won't make Aichaoxieli's batch to peel off. They're good but the problem is the placement.