1. and InstallDesigned with a zipper and nylon snap fastener opening, it is simple and convenient to install without removing the hose and use without removing the pump cover. When not in use, the zipper can be closed to prevent dust and other dirt 2. Tightly SecuredThe 3 nylon buckles on the side keep the cover tightly secured to the spa heater pump to withstand harsh weather and keep it from being blown away by the wind 3. Side Buckle DesignThe side buckle design allows the protective cover to cover your spa heat pump unit. And it provides allweather protection to keep your spa heating pump clean, dry, and looking like 4. Quality 600D Polyester CanvasThe hot tub spa heater pump cover is made of highquality 600D polyester canvas material, sturdy, reusable, rain, and tearresistant, preventing your spa heating pump from water, dirt, moisture, and so on, thus prolonging the life of the machine.