{"product_id":"mountainsmith-zerk-ul-40-backpack-darknight-d2739","title":"Mountainsmith Zerk UL 40 Backpack, Darknight","description":"UPDATED FOR 2026! Co-designed with The Real Hiking Viking, the ZERK 40L, part of our ZERK UL Series, has been torture tested \u0026amp; painstakingly developed thru 10's of thousands of thru-hiking miles; keeping you going faster, longer and more efficiently on your next ultralight adventure. Now with increased modularity, new UL materials and additional convenience on the trail.","brand":"Second Gear WNC","offers":[{"title":"Darknight \/ New","offer_id":47754235543770,"sku":"7HC64C-3832","price":229.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0279\/1646\/8362\/files\/17877708579714XLFP9NUW2TK5GZMHH09.jpg?v=1787770870","url":"https:\/\/secondgearwnc.com\/products\/mountainsmith-zerk-ul-40-backpack-darknight-d2739","provider":"Second Gear WNC","version":"1.0","type":"link"}