Who needs to feel cold outside just
because it's cold outside?
Fleece
jackets and the Insulating Layer
Traditionally insulation underneath the top
layers of clothing has come from wool. While this has many features to commend
it - such as the ability to wick away perspiration, good insulating qualities
and the retention of insulating qualities when damp or wet - wool has largely
been superseded by more modern materials particularly "fleece".
Fleece is a polyester velour
material that creates air pockets so trapping air and retaining body heat.
There are a wide range of fleeces available, some for real bargain prices.
Despite initial appearances, you do get what you pay for. Less expensive
fleece fabrics just can't retain their insulating qualities and non-pilling
appearance after repeated use and laundering, they also start off with less
insulating properties for their bulk.
Fleece fabrics are available in a range of weights to provide the right
level of insulation for most outdoor activities. Generally they are graded
as 100, 200 or 300 weights in order of thickness and insulating ability.
Advantages of fleece:
 | Provides warmth without
the weight and bulk of traditional insulating fabrics
|
|
| Very breathable to provide
comfort in all activities; does not restrict the movement
of water vapor |
|
| Dries quickly to minimize
heat loss |
|
| Machine washable
|
|
| Versatile; appropriate for
a broad range of activities |
|
| Available in light, mid,
and heavy weight constructions to provide a choice of insulation
level |
|
Many styles are also available
with a water and wind-repellent surface that sheds rain and snow. This
makes fleeces suitable for use as an outer shell layer in many conditions.
However, do not assume that you will be able to get away with using a fleece
as a permanent outer layer in all conditions, they are no substitute for
a proper wind-proof and water-proof outer shell. In Antarctica (and other
environments too) you NEED a fully windproof outer shell.
In selecting clothing for cold and extreme
weather the priorities are:
North
Face Denali Fleece Jacket -
