I needed something to get me through the break in period with a new pair of golf shoes. After doing some research online, I found Wrightsock and Engo. Both performed as promised in reducing blisters, especially where I am always prone to getting them--on my heels. Both work by allowing the sock next to your skin to slide at the hot spots, rather than have your skin slide on the sock. With Engo, you can place the Teflon tape at the hotspots. With Wrightsock, your entire feet that is covered with the inner layer is allowed to slide on the outer layer. This works great if you didn't do sports with a lot of turning, stopping, and or shifting. I can't recommend this product for golf or any sport that requires shifting or rotating. I felt as though I was trying to swing while balancing on wet river rocks. Walking on slopes was also a bit uncomfortable, as my feet felt as though they were sliding downhill in my shoe. My feet felt like they were swimming in the shoe all day. This occurred in a perfectly fit golf shoe. The Engo product worked better for me, because I was able to limit the amount of sliding to the hotspots only. I used my normal sports socks with this product and it worked best for my purposes. Wrightsock does have something though, and I would probably try it out for another activity. I might try the thicker wool combo in my hiking boots. I guess it's a good product for street runners, but for cross-country, I'm not so sure. I hope they come out with something much more stable for action sports.