The rule of thumb for clo values is that 2 is good to around 40 degrees, 4 to 20 degrees, and 6 to 0
5.0 oz/sq yd Climashield APEX
Climashield APEX continuous filament insulation is a great choice when you want something highly durable, efficient, and easy to work with. It excells in applications having large panels such as a quilt because it does not require much quilting.
Sold by the continuous linear yard by 60 inches wide. For example, entering a 2 in the quantity box gets you a continuous piece 72 inches by the roll width of 60 inches.
5 oz/sq yd. loft=1.2 " nominal. clo=.82/oz. Total CLO : 5.0 oz * 0.82 clo/oz = 4.1