Air escape slit openings are a must for heat to escape when soldering repousse front to back portion. What a buy! Earn Free USPS Priority/Ins/Track when sending your $126 USA check or USPS Money order to MIMI DEE ARTWEAR - PO BOX 458 - METHUEN, MA 01844 (same address > 12 years!)
Hurry before it is marked to meet rising metal prices!