Indoor training is all the rage, and all about perspiration. Fans help, and you can dress as minimally as you, your family and perhaps your neighbors can tolerate, but it is inevitable that if you are working hard, sweat will come. Human sweat is salty, corrosive, so you want to keep your bike as protected as possible. Several companies make bike protectors for this purpose, but the Elite Protec Plus Sweat Protector is usually rated as the best by those who have used a few options.

Easily installed and adjusted for use on most adult bikes, the Protec Plus features a polyester synthetic upper with neoprene under layer. It catches and holds sweat, can be hand or machined washed, and hung to dry. It is easily the most durable option available, offering great longevity for many seasons of effective use.