You can easily attach the cup holder to the handle of the mountain buggy. On the left-hand side of the buggy handle, you can find a pre-installed lug. This lug is where you will adjust the buggy cup holder. The installation is simple, and you can find the step by step instructions in the user manual that comes inside the product packaging. Also, many things depend on the mechanism as well. A few cup holders are detachable such that you can detach them and take them inside your home or anywhere you are going. The other ones are mounted with nails, so they remain attached. We would suggest you take the help of an expert while mounting them to avoid any mishaps.