Iain Sinclair's CardSharp Credit Card Folding Knife(£15)
is a svelte knife and folds into a card to fit in your wallet. It
weighs just 13 grams, is only 2mm thick and features a stainless steel
blade with a healthy 65mm cutting edge and a short serrated edge on the
opposite side. When folded, a built-in sheath prevents you from
accidentally touching the sharp blade. Check out the video, you can see
how it does fold/unfold. It will start shipping from January for
£15($23) and and can be pre-ordered.
