These are genuine USMC issue carriers for the CAT Tourniquet. Made in the USA, they are configured to allow mounting on any MOLLE platform vertically or horizontally or on a belt horizontally or vertically. The plastic top snugly grips the tourniquet while the pull tab allows rapid single hand access.
Your tourniquet doesn't do you any good if its not with you when you need it an a way that you can rapidly employ it- these pouches allow such versatile mounting options there is never a reason to not have it.
Used, in very good condition.