When I have my first day's skiing without my skins on, my muscles go rock-like after about 3 or 4 hours, depending on how I'm skiing. Then they start to tremble. Within an hour or so, I can't get up or sit down with out pain and stiffness. Then the muscles hurt to the touch, like they're bruised. At night, they are twitching and contracting and buzzing and hurting. Then for the next few days, any movement or activity is incredibly painful.
With Skins? By the end of the day my legs feel happily tired. I keep them on for the evening too, to continue their work. Next day, slight stiffness which vanishes during the first run. No pain, no groaning to sit down or get up, no bruised feeling.
they're not tight, either. they promote them also for wearing on long flights, to combat DVT.
Most top level sports people wear them here, for training, as you can go hard and not need the recovery time. I reckon they are miracle gear. For people who only have one ski holiday a season, I'd say they're a must. They are expensive though!www.skins.com.au