Thermolite® is a collective name for insulating linings manufactured by Dupont. The material is available in different types and weights for a variety of applications and for different insulation needs. The models that Peak Performance uses are Thermolite plus, Thermolite active, and Thermolite micro. Thermolite® plus provides the best insulation while Thermolite® active has the best breathing properties, and Thermolite® micro is the thinnest and lightest lining.
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