Kathmandu

They sell high quality outdoor winter clothes. My friend will be heading to Japan in the winter and found some nice fleecy items and thermals. The clothes are quite pricey but there was a clearance rack so items were around 50% off. There are additional discounts on some items too if you are a 'summit' member. If the discount is $20 or more it is probably worth signing up which costs around that.

Lots of camping gear and sleeping bags! Came in here to look at some warm jackets, they are good quality but are definitely on the pricey side. This store isn't that big compared to Chatswood, but stocks a lot of products.