Outdoor Clothing Theory, Part 1: Base Layers

This video reviews the scientific literature to establish the desirable attributes of a base layer, when used as part of a multi-layer clothing system where exertion in the cold creates a sweat risk for post-exercise chilling. 17 base layers are tested for their wetting, wicking, and evaporating ability. Index 00:00 Intro 02:17 Two-Part Challenge 04:01 Source Studies 04:52 Water Vapor Transmission 07:35 Liquid Water Transmission 13:19 Fishnet 17:27 Wool 21:07 Theory Summary 22:49 List of Tested Shirts 23:11 Cotton 23:45 Nordick Track 24:25 Mountain Hardwear 24:41 The North Face 24:58 Columbia PFG 25:24 REI 25:58 32 COOL 26:17 Hanes 26:36 KUIU 27:13 Brynje 28:08 Vargo 28:52 Sitka 29:15 Adidas 29:50 Montbell Cool Light Wickron 30:26 Montbell ZEO-LINE Mesh 31:11 Outdoor Research 31:45 Patagonia 32:12 Dry Shirt Weights 32:28 Testing Procedure 33:56 Garment Water Uptake 37:58 Evaporation Rate 47:18 Summary