Made from 1/4" thick F40 Unidirectional Carbon Fiber from Ghost Carbon Fiber. This is a unidirectional core with weave pattern on the top layers. Holds keys in place in the pocket, and securely out of the pocket. Bottle opener works, but disclaimer: it is not a metal, while it works and will last for a long time... it will scratch and fray. It's industrial strength minimal void CF. All hand made by me with simple tools, no computer aided cutting tools. Possible small small blemishes.
$40 shipped via Etsy, PayPal, or Money Order.
Here is a demonstration of the retention they have
$40 shipped via Etsy, PayPal, or Money Order.



Here is a demonstration of the retention they have
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