Size 11 women's slippers in Canada
You can get great deals on large size shoes at Amazon with a bit of patience. Their own Amazon Essentials range up to size 15 US is well worth a look with fashionable styles at great prices. The women's shoes department goes right up to 16 US, although many of the largest sizes will either be Chinese brands or unisex.
US chain Maurices have nearly 900 stores across US & Canada & also ship online to both. They have a nice range of cute shoes at affordable prices up to size 12 US. They mainly do casual shoes, boots and summer sandals. Free US shipping & flat rate to Canada. Store returns are free.
Sustainable quality shoes, sandals & boots in sizes 11, 11.5 and 12 us. Ships to Canada and USA with free 30 day returns. Stores in Edmonton & Calgary in Canada. Free loyalty rewards program. A few times a year, they run a "made to order" service where you can order narrow and wide width styles.
Luxe slippers/flats you can wear inside & out plus cute sneakers too available up to size 12 us (10 uk). Fit notes for each style are included in their size guide & they have a 30 day money back guarantee. Free US shipping & returns. Also ships to Canada, Australia & UK with all taxes included at checkout.
Known as 'The Bay', this famous department store has over 80 branches across Canada. Their online store usually has around 1000 size 11 shoes, about 100 size 12s and a smaller range of size 13 shoes in stock with free shipping and returns. Brands include Clarks, Sam Edelman, Cloudwalkers, Aravon and Cole Haan.
US brand Sorel's women's footwear goes up to size 12 US (10 UK or 43 US). They are renowned for their durable winter boots but offer much more than just outdoor styles. They have a wide variety of boots as well as trainers & even fashion sandals available. They also have a range of premium slippers, many fleece lined.
Specialist large size shoe store in Quebec also selling online to Canada ($10 flat rate shipping) with a wide range of women's shoes in sizes 10 to 15 US, with selected fantasy styles up to size 17 US. Large selection of brands and styles. They even do rain boots, slippers and socks. They are happy to advise on the right size for each style if you send them your foot measurements before ordering or during checkout. You can also visit their shop in Rue St-Hubert, Montreal. Website is in french.
Canadian family owned store shipping to US & Canada with select shoes, walking sandals & boots available up to size 13 us including some narrow, wide & extra wide fit. Mainly comfort and traditional styles. Several stores across Ontario. Note that you cannot return online orders to stores & must pay return shipping costs.