Question
Mon June 02, 2008 By:

A QUESION RELATED TO CHEMISTRY

Expert Reply
Tue June 17, 2008

Normally sweaters are made of materials like wool.It keeps you warm as such materials are natural insulators. For example Wool traps warm body heat between the fibers, it is naturally water repellent so it can withstand moderate rain and snow, and wool is wind resistant.This is the principle on which sweaters work.

Continious washing results in degradation in quality of  cloth(or arrangement of fibre) and hence leads to a natural reduction in ability of sweaters to keep you warm.

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