Dynamic Rainy Day Extreme Lube keeps bicycle chains moving smoothly and reliably in constant rain. Its special, water-repellent formula guarantees long-lasting lubrication in wet conditions and effectively protects against rust. The high penetrating power allows the oil to penetrate low into each chain link. This gives you an efficient and smooth ride even in rainy weather. This lubricant, appreciated by professionals, is indispensable for anyone who doesn't want to give up cycling even in bad weather.