warm layer

Fleece or sweater

A warm layer is a piece of clothing worn between a base layer and an outer shell, designed to retain body heat.

The term belongs to outdoor and athletic gear vocabulary, where layering systems optimize temperature regulation: I packed a fleece as my warm layer for the hike.

Also called a mid layer or insulating layer.

Related

thermal underwear · long underwear · jacket · winter coat · down · parka · cozy · snug · body heat · base · lining · wool · padding · quilted · vest · hoodie · cardigan · fuzzy socks

Opposites
thermal function in clothing systems

warm layerwindbreaker

Lightweight gust-resistant jacket

hardshell · outer layer · base layer · protective layer · softshell

Family

warm, layer, warmer, warmest, warmly, warmth, warming, warmed, layers

Familiarity
Top 500,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Positive · Everyday, not technical · Rated G