Your Exerstrider poles have allowed me to remain mobile and independent after a head injury that left me with a permanent balance disorder. My physical therapist recommended these poles, and I have used them for six years now. Have put over 4000 miles on them so it's time for new "tires" LOL. In the past year I have lost 35 pounds, and brought my blood sugar and cholesterol levels back to normal, just by changing my diet and increasing the walking time with my Exerstrider poles. It would not be possible for me to do any walking or exercise without these poles, and I wanted you to know how much I appreciate your HIGH quality, well designed product. I have recommended them to many people over the years I have used them. THANK YOU!!!!!