For the money, this is an excellent buy. They are made by Swagman. I purchased one for each bike (3) as I am using them, with a little modification, on a 4 bike Thule platform hitch rack. My previous bag made by Adco, had a much larger zipper. The MSRP on the ADCO bag is more than 3 times the cost of this bag. The material seems the same. The picture shows two straps, but there are many more. I didn't count them, but a guess would be 5. If you have a pointed object, such as a brake handle sticking into the bag, put a cloth over the handle as it will wear through very quickly. The top corners should have been reinforced by the manufacturer. I am going to try and reinforce the corners with a iron on patch on the inside. If it doesn't stick, I will use a towel over the brake handle. Pull all the straps a tight as you can. These bags will see almost 4000 miles in the next few months.