Ill give the retailer an option to replace them. The top is covered with mesh fabric (a major reason why the price isnt higher) which is great for breathability in the summer. I like them because they aren’t so large and sloppy looking as some others I have found while shopping for a pair. Wie immer Passform garantiert. Once I mount the hook onto a stud on the wall I noticed the hook itself keeps tilting once I place my bike on it. Also the color of blue is soothing for summer days. I like this one also because it has two hanging sections. The rings according to the FAQs on Amazon UK are 3D printed brittle plastic of awful quality. Very disappointed and will definitely go back to the reliable, better value model on which everything works as expected. This was a great mouse, and I feel it was worth more than what it cost.