McNett Gear Aid Black Witch, neoprene repair adhesive for permanent, flexible and strong repairs to wet or dry suits and other neoprene items like kneepads and wetsocks.
Repairs and seals cuts and small holes in neoprene, drying very quickly - a few minutes to touch dry and about an hour to fully cured.
Comes in a 28ml tube, about half the size of a normal toothpaste tube.