I wouldn't worry too much about it: eg. Dharamsala is chock full of shops selling cheap outdoor clothing. However, while perfectly functional, they are mostly off-label or pirated Chinese copies, not necessarily the real thing, so I'm not sure is the "quality" will suffice for you. You're unlikely to find authentic branded clothing outside the main cities like Delhi and Kathmandu.

I wouldn't worry too much about it - for example, Dharamsala is chock full of shops selling cheap outdoor clothing. However, while perfectly functional, they are mostly off-label or pirated Chinese copies, not necessarily the real thing, so I'm not sure if the "quality" will suffice for you. You're unlikely to find authentic branded clothing outside the main cities like Delhi and Kathmandu.