{"product_id":"castelli-m-estremo-thermal-winter-skully","title":"Castelli M Estremo Thermal Winter Skully","description":"\u003cp\u003eThe Estremo Thermal Winter Skully is a wind-blocking skull cap for the coldest riding days, cut to sit under a helmet without lifting the shell off the head or fouling the retention system. Estremo is Castelli's deepest winter designation, so this fabric prioritizes stopping wind at the forehead and ears over raw breathability, which is the correct trade below freezing. Ear coverage runs far enough down to matter on a fast descent, where windchill does the real damage. It packs flat into a jersey pocket, so it can come off at the base of a climb and go back on at the summit. Men's line.\u003c\/p\u003e","brand":"Castelli","offers":[{"title":"Black","offer_id":48680480243869,"sku":"H4526531010","price":55.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0256\/7103\/files\/01-4526531-010.jpg?v=1788797938","url":"https:\/\/cripplecreekbc.com\/products\/castelli-m-estremo-thermal-winter-skully","provider":"Cripple Creek Backcountry","version":"1.0","type":"link"}