these pants really cant be found anywhere yet. here is more info on them:
[*]Insulated pant with hidden pocket in side vent and side welded icon. 
[*]20K mm Waterproofing, 20K g/m2/24h Breathability with fully taped seams 
[*]3M&153; Thinsulate&153; 100 grams 
[*]Side and inner invisible thigh vents 
[*]Laser cut and waterproof zippers 
[*]Zip/snap storm skirt system compatible 
[*]Silicon gripper waist band and adjustable elastic waist tabs 
[*]Cuff savers, boot gaiters, and hem gusset zips 
[*]Hidden vent pocket 
[*]Fit: Loose
[from altrec.com]