High visibility void message reveals tampering attempts. Patented triple-seal closure with interior adhesive leaves no openings once sealed. Special thermochromic ink turns red when subjected to heat. Security micro perforation immediately reveals attempts to pull closure up. Anti-static liner does not cling to hands and clothes, speeding up processing. Aqua detect ink reveals exposure to fluid. Large serial numbers and barcodes for easy tracking via CCTV. Indented side welds preventing cut and resealing. 1,000 note capacity.