Be aware of fraudulent tourniquets. A CAT typically costs $25-30, if you buy one on Amazon or similar company for $8, it's probably fake and will not be effective when needed. Check the reviews! I have not heard of any fake SOF Tactical Tourniquet's. CAT and SOF-T are the only approved tourniquets by the C-TCCC to date.
Gen 7 CAT's are now available. Here are the highlights of the features that have been upgraded from the Gen 6's.