All their bicycle products are based around the same fundamental principle; using a viscoelastic rubber impregnated cord with a non-abrasive brass tip to plug holes in tyres. It’s a low force insertion system, so easy to use even on the go with sweaty hands, and the nature of the brass-tipped plugs mean they securely stay in the tyre. In fact, it works so well that a plug can last the whole life of a tyre if installed correctly, making expensive tyres seem like much more of an investment than a risk.