There are no standard sizes for clothing, which is why each brand has their own unique cut and fit. Please do not presume you are the same size between brands for a similar product. If you have a pair of mid layer leggings that fits correctly, then use it as a template for these measurements.  

Waist - Measure the full circumference of your torso above the hips
Inside Leg - Measure from the top of your groin down the inside of your leg to the ankle bone. 

Our mid layers will contour to most body shapes when worn thanks to the fabrics in-built stretch. You should wear them close fitting but not so they are restrictive. Wearing baggy or ill fitting mid layers will lead to the loss of heat and a reduction in their wicking properties.

These mid layers are designed to be worn over the top of our base layers but they can be worn directly next to the skin if required. Sizes for both Sub Zero base layers and mid layers are comparable - so if you wear a Factor 1 plus base layer in large, then you should require a Sub Zero Factor 2 mid layer in the same size and vice versa. However, this may not work out for everybody so please consult the size chart below. 

Please be aware that the inside leg measurements are taken from the garments unstretched. The waist measurement indicates the range of fit. 

The table below shows the garment measurements for our Factor 2 Mid layer leggings. There is a tolerance of +/- 5mm.

cm in cm in UK EU g oz
XSMALL 66-71 26-28 66 26 6 34 145 5.1
SMALL 74-79 29-31 69 27 8-10 36-38 155 5.5
MEDIUM 81-87 32-34 71 28 12 40 175 6.2
LARGE 89-96 35-37 74 29 14 42 185 6.5
XLARGE 97-102 38-40 76 30 16 44 200 7.1
XXLARGE 104-107 41-42 79 31 18 46 220 7.8