Material: cardboard, PE (mailing bag). Complete solution for shipping biological materials of category B (UN 3373). Mailing bags tested to 95 kPa as secondary containers incl. absorbent pad and tamper-proof seal Serial numbering to ensure traceability of samples Various sizes for shipping through the post and with couriers Flat-packed for space-saving storage Shipping carton PathoShield with A4 mailing bag and absorbent pad Internal mailing bag dimensions: 270 x 203 mm. Delivery incl. A4 mailing bag and absorbent pad.