Bag Size: 20 x 20 High visibility void message appears when tampered with. Specially formulated thermochromic ink turns red when subjected to heat. Unique triple seal closure with interior adhesive sealing. Security micro perforation releases with attempts to pull up. Anti-static metalized release liner does not cling to clothes when removed. Aqua detect ink smears when exposed to moisture. Sequential numbers embedded in closure. Security micro-print along indented side welds.