Our specimen bags are designed to contain liquid if a urine bottle should leak. The bags utilize a unique adhesive strip which forms a leak-proof, tamper-evident seal that is impossible to reopen without destroying the bag. 
If you are interested in us or have any question please contact us.
Email:sales02@tamper-evident.com 
Tel:86-755-61148000 URL:
http://www.tamper-evident.com