The Patagonia store on Banff Ave is an authorized retailer carrying the full technical and lifestyle apparel range. The Torrentshell and Calcite hardshells are the practical workhorses for Banff weather. The Nano Puff and Down Sweater are the insulation standards.
The Capilene base layers are worth stocking up on if you are doing consecutive days of activity. The environmental mission that the brand has built is woven into the store experience in a way that does not feel forced. The Worn Wear program for used and repaired Patagonia gear occasionally has stock at the Banff location.
The staff can generally answer technical questions about appropriate layering systems for the conditions you describe.
Specials, hidden gems, and seasonal guides. No spam.