Bought a new north fuse, was bleeding the air from the struts after a sesh by wiping my hand along struts when my hand brushed over those yellow support strips sewn onto the struts it sliced a bit of my hand on the corner piece luckily I wasn't pushing down too hard so it wasn't deep enough to draw blood, guessing this must be a new crisp kite thing.
(Food for though?) when your packing up your kite and putting it away.