Constructed from 3-layer stretch twill with a Fusalp membrane, these trousers offer technical performance. The design features an adjustable waistband, multiple zippered pockets, preformed knees, and reinforced lower legs with snow gaiters. 3-layer stretch twill critical taped seams adjustable waistband with tabs high back protection panel zippered hand, thigh and back pockets pre-shaped knees with darts inseam leg air vents snow gaiters reinforced bottom and zippered gusset this model fits true to size. we recommend taking your usual size. if you are between sizes, choose the larger size.