I'm a new above knee amputee (amp occurred in 03/23 and prosthetic in 06/23). I've had skin trouble with rashes underneath the silicone liner, so my prosthetist ordered some 'liner-liners' similar to these Swiftwick 'socks'. The liner-liners ordered by my prosthetist worked great at correcting the skin issues I was having but also did a great job at wicking sweat as the summer temps increased! I have since tried two other varieties of these liner-liners, including these Swiftwick socks, and these Swiftwicks are by far my favorite! I ordered a three-pack initially and was concerned about fit because they seem so small (I ordered 9" size). They stretched well over my residual limb, fit great underneath my liner, and are comfortable to wear all day! There has been more than one occasion where I had to remove my liner and swap out the socks because things were getting a little damp. I have since ordered a second three-pack and they are all holding up to extended wear and multiple washes.