La Sportiva calls it seamless technology. We call it comfortable. The Cirrus Tight is somehow built without any seams, using a 4-way stretch fabric that is body mapped with varying insulation and ventilation zones. The Polygiene® fabric is moisture wicking with an anti-bacterial / anti-odor treatment. The lightweight tights have an 18” (46cm) inseam so they won’t crowd your shins inside a ski boot. Great for wearing underneath a skin suit or any ski pant. As a bonus, you can also use these for running after the snow melts (not before as you should still be skiing). 135g (4.8oz) in size M.