Backpack
Hiking boots are the most important footwear for mountain hiking. Sandals, flip flops, etc. not suitable.
Wind and rain-proof jacket and pants.
Backpack.
Pants, sweater, sports tops.
Hats (one warm in strong winds and one lighter in the sun).
Several pairs of socks.
Light footwear for resting your feet after tours.
Have energy bars, nuts, sandwiches in your backpack.
Plasters for calluses.
Have the medicines you need.
Sun cream.
Sunglasses.
Hygiene.