If you've ever looked at winter athletes rocking tights in the most brutal conditions and wondered, But what about the business of wind and cold on the...inseam? Here's the answer warmth where you need it most for high level running, skiing, cycling and anything that might call for an extra layer. (Luge?) 18.5 micron Zepher fabric with a poly micro-denier windstop front. Inseam (excluding gusset): S=6.25'', M=6.5'', L=6.75'', XL=7''.