To be clear, anything placed in the shoe and under the foot may be called an orthotic. However, most prefabricated orthotics that can be bought off-the-shelf are just contoured soft sponges, or gels that feel good on the soles. Sadly, many of these do not offer any real support. A safer option would be reasonably priced, branded orthotics that are known to give actual support, with some form of arch base and a contoured heel. In looking for the best orthotics in Burlington, Ontario, however, you must consider first and foremost that pre-fabricated ones generally cannot provide you with the foot support you need.
http://www.omniclinic.ca/orthotics-burlington-ontario-put-foot-best-kind/