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Worbla’s® KobraCast Art is just like all the products of the Worbla’s® Art Series it is produced solvent-free produced and to proceed and contains no hazardous substances. It is activated by heat (best approx. 80-90 °C / 175-195 °F) and can be shaped easily by hand or even thermoformed. WKA can be re-activated as often as you like and all leftovers can be re-used so there is almost no waste. Worbla’s® KobraCast Art contains strong heat activated glue which means it sticks very well to itself and to other materials if treated properly.
Do you want to sew your mouthguard yourself? Here is a simple guide for beginners (german)