Sealskinz winter hatsetting the standard for waterproofing your head in cold conditions features 100 nylon totally waterproof windproof and breathable durable ripstop outer shell fabric fully welded and taped seams flexible adjustable peak keeps rain andor sun out of eyes drop down ear flaps micro fleece lining for warmth and moisture control elasticated size adjusterbuy sealskinz clothing from chain reaction cycles the worlds largest online bike store