What trekking gear should I bring from home?
You can buy virtually everything you need for trekking from down jackets to water bottles in Kathmandu. There is a variety of branded stores as well as a large selection of copied products mainly in Thamel that are of fairly good quality. It's still worth bringing your own gear if it doesn't take up too much weight, especially your own trekking boots to avoid any potential issues when purchasing new shoes.