BougeRV's universal electric jack protective cover will fit trailers and RVs. It is made of thick 600D waterproof polyester, which protects the electric part from dirt, moisture and dust. Compared to nylon, which only has a density of 200D or 400D, polyester is ideal for harsh conditions. Universal size cover with jack handle opening fits most electric motor models. It is easy to put on and secures with adjustable buckles. It is just perfect for use during winter storage of trailers and residential trailers and is a great practical accessory.