Features: THICKER AND ENVIRONMENTALLY FRIENDLY - This tyre is 1.8mm thick, which is twice the thickness of the original tyre (0.9mm). It is made of high-quality butyl rubber, is wear-resistant, high temperatures, durable and environmentally friendly. Stable performance - Improved version thicker rubber tyres that are extremely tear-resistant, scratch-resistant and durable, feature a high-quality valve that retains more pressure. .