Since I was small and small, I bought a small but it was not so small. Although not so big as to be troublesome. Since the durability of this mouse is dangerously low in some cases, it is the largest evaluation point, and it is the only unknown point. Other than that it is a mouse that can be used normally and there are no disadvantages. It can be evaluated in terms of garbage that all boxes and packaging come out in paper. I decided "I do not know" as to whether or not to buy next, rather than whether or not this product is still being produced when purchasing next. I may buy it if I have a certain life span.