Outdoor sports and travel products (jackets, backpacks, boots, etc) in Xian?

I'm looking for places in the city that sell outdoor sports and travel products, such as jackets, backpacks, boots, etc for hiking, trekking and camping.

Could be brands such as Patagonia, Arc'teryx, Mammut, Salomon, etc, or local Chinese labels are okay too.

Could someone recommend a place that sells these products?

Thanks!