| The Snowflakes on each style of underwear help you determine your needs. The Kenyon Snowflake Rating system has been devised to simplify your selection of thermals. |
| |
Lightweight |
Medium Weight |
Expedition Weight |
| Thermal |
Polypropylene Rib
Silkyester
Poly-Lite Rib
OutlastŪ Rib |
Poly/Wool/Polypro
Kenyon BiComponent
OutlastŪ BiComponent
Everywear
Merino Wool
Eco-Thermals |
Polypropylene Fleece
Polarskins Fleece |
| Rating |
 |
 |
 |
Recommended
Usage |
Moderate weather with little activity; continuous activity in cold weather |
Moderate to cold weather with some activity; cold weather when you alternate between activity and rest. |
Sub-freezing temperatures at any level of activity. |
Applied Sports &
Activities |
Cross Country Skiing, Running, Hiking, Cycling. |
Walking, Standing, Skiing, Snow Boarding, and Ice Skating on extremely cold days. |
Winter Camping, Climbing, and Hunting |