This will depend on the time of year you are jumping. During the colder months it is advisable to wear several warm thin layers. In the summer you could wear shorts and T-Shirt! Trainers or flat soled shoes are ideal footwear. You will be given a jumpsuit to wear over your clothing along with a helmet and goggles.
There is a bar on the dropzone, so you don’t need to bring snacks, unless you have some favourite ones 😉