My wife has had these tights and has worn them for over two years. She wears them to trail run and as a baselayer for nordic skiing and racing...... and sometimes around the house all day if she doesnt have time to change :) She actually wore them under a skin suit in the Cours du Bois 90 K skate race where conditions went from spring-like to blizzard -like at the top of the Divide. She says they literally saved her ars. The compression memory has held up over time. They are breathable in the crotch and do not retain odor. The decals (silver and raspberry) partially came off after several months of washing. It is important to size DOWN with these. (If you are a large, order a medium). You want to have to wiggle into them.