Refrigiwear Men's Iron-Tuff Insulated Vest Stay warm in even the most extreme winter conditions with 11.25 oz. "RefrigiFill" insulation that can keep you comfortable down to -50 degrees F Keep out the elements for added comfort with a water-repellent, wind-tight outershell Stretch knit sides provide added comfort and help improve overall mobility when wearing the vest Highly durable for many years of use with tear- and abrasion resistant denier nylon outershell, reinforced brass rivets and bound seams that also help seal out drafts An insulated knit collar provides extra coverage for your neck on colder days