Very tough and durable Brit-issue spare water bottle cap.

This is the later-issue - GSR - variant, designed to accompany the drinking facility of the newer gas mask - general service respirator.

This is the cap only and will fit all issue osprey bottles made over the last 50 years or so!

Note: No gas mask or water bottle is included.

Kev says: "Other stopper patterns may also be available. Do drop us a line....!"