The snap cap functions as the flowcap's 'skeleton'. We are offering them here as the fastest way to get a replacement. You can also use snap caps for the most lightweight, low-profile cap option - just don’t hit yourself!
CAUTION: Without the silicone flowcap shell, this cap is hard and fairly pointy and can really hurt someone. It is also likely to break if smashed hard, and offers little protection for the capsule from impact or dirt - use with caution.