I recommend XTreme Monkey cast iron kettlebells and they can be ordered online at The Treadmill Factory. Fitness Solutions in Saskatoon also sells cast iron kettlebells. Call in advance as they are sometimes out of stock!
Or order them from Fitness Solutions here: https://www.fitnesssaskatoon.com/collections/weights/products/xtreme-monkey-cast-iron-kettlebells?variant=4147070664745
I recommend women under 50 years of age buy one 8kg kettlebell, one 12kg kettlebell and one 16kg kettlebell.
I recommend women 50+ buy one 6kg kettlebell in addition to one 8kg kettlebell, one 12kg kettlebell, and one 16kg kettlebell.
I recommend men buy one 12kg kettlebell, one 16kg kettlebell and one 20kg kettlebell. Men under the age of 50 will also need a 24kg kettlebell. For mobility work, one 8kg bell would also be useful.