I had originally purchased the trail half tight in Medium without a liner. I loved the storage capacity and even used it to run a 5 minute marathon PB, but was not convinced about the size. After reading a review from another customer I decided to purchase the lined version in Small. It has been a game-changer. It takes a bit more work to get on, but once in place nothing moves and the added compression feels good on long runs. I still get a bit of chafing from one inseam in the inner thighs, but these are still the best running tights I have owned. I’ve washed them over 50 times and they still look like new and have not stretched. I recently bought a second pair to have a different color. I highly recommend the lined version and going one size smaller.