Features of the Pearl Izumi Men's Summit AmFIB Lite Pant ELITE AmFIBA(R) Softshell fabric offers wind and water protection Thermal Fleece fabric with water shedding PI DryA(R) Technology on back of knees Snap front waist closure with zip fly External waist adjustment Two zippered security hand pockets and zipped pocket on tHigh Tailored mountain bike specific Fit BioVizA(R) reflective elements for low-light visibility Fabric Details: Front: 100% Polyester Back: 56% Nylon / 30% Polyester / 14% LycraA(R) PiDryA(R)