Worn alone by 7 ° C and with a ski tights by -5 ° C, it turned out to be absolutely perfect comfort and heat level!
The fabric is well waterproofing and very solid (it resisted the clutches of the chat which pattoune).
A must have for the winter which has become essential to me!

Very small size I do 32/34 and the 34 does not go to take 2 sizes above yours otherwise it is perfect!

Very warm and flexible leggings! Do not hesitate to take a size above

Hold on hot and is very pleasant to wear. Be careful if you hesitate between 2 sizes take the largest, but if you make a small 36 for example, take 36! I run between 36/38, the 38 is perfect but a little wide at the waist.

This pants keeps its promises: it keeps hot! I carried it during the gel period this winter, and it was super pleasant. The cold does not pierce, and it feels warm.
On the other hand, contrary to what was advised, I took my size well and not the one above and the pants suits me perfectly. I recommend those who have a fine waist and the hips developed to do the same, the pants are quite stretch to adapt ... And if not, it made a excess of fabric on my side (I started by ordering the size above).
Only small downside: it is a bit long for me (I measure 1m60 and I took a size 40).