Rare British Water Carrier Mk.2
Issue survival aid for Special Forces and Pilots.
New old stock. Part No: 27C/9777715.
NATO Stock Number (NSN): 8465-99-977-7715
Tough, durable, lightweight,water bladder designed for extended survival/Escape & Evasion use.
Fold over Velcro and press-stud closed neck.
Webbing carry strap.
Measures approximately 8 x 18 inches. Will hold approximately 1-2 litres of water/fluid. 
Takes up little space in a windproof smock pocket when empty.
Exterior glue marks from manufacture