I am a 67 yo women who loves to ski and I have been troubled with pain when skiing deep powder or long days. A friend suggested brace layers and I bought K1 vent ones. I am planning on walking the Camino to Santiago next month and wanted something to support my knees on the daily 17 mile walks. So far, during training they have been superb in supporting me and I have far less pain following a long walk/ Barre class. I even use them under my work clothes doing yard work that requires up and down hills. I plan to use them skiing and have no doubts they will work for me.
Careful on the sizing and measure your waist correctly ( I originally bought a size to big) and the shipping (DHL) takes forever ( 2 weeks). Wash them according to directions ( cold water; line dry).
I highly recommend this product and it is worth every penny.