I'm totally delighted with my Alco Cover. Ordered this cover for our new pitching machine to protect the investment. This cover is made of very heavy weight material. You can see there is a lot of attention to detail in the cover - high quality eyelets, drawstring stitching, etc. There is a vent in the top that allows air flow and still keeps the rain out. It has been through several major rainstorms and the cover and machine look like new. Also, the customer service is top notch. I made a mistake in the measurements and they responded very quickly to my email. Even though the cover was already in manufacturing, they were able to alter the size with a minimal additional cost. I was was so surprised at the level of service and communication from Alco. I really can not recommend them enough! 5 Stars all the way.