I like how detailed your market research is and how you explain the trends you found in other products. It helps us understand where your idea stands in the market.
I wish that you wrote the product name instead of writing a product number in your graphs. Its hard to find and remember which product corresponds to each number.
What if you added a hand massager so that circulation could also improve around your hands or anywhere else circulation needs to improve. This could be expanded to anyone who sits for a long time.