How is the height adjusted? Are these custom to order? What will be the lead time to manufacture if custom? Who is doing the proper measurements?
Are these for people with a temporary injury or long term? If temporary, what is the size of your market for a product that will not be reimbursed by an insurance company (no way you’ll get a nickel from CMS)? If long-term, how does that mesh with your “young and active” strategy? What will be your price point? COGS?
Lovely design, why did you use a standard bottom rubber grip? Do you think it integrates well into the rest of the design?
Did you do any analysis on your moment arm? Weight capacity? Impact strength? Any DFMEA?