Mid-Layers

Mid-layers generally serve the function of keeping the wearer warm underneath a shell. These can take many different forms from down vests to hoodies to insulating shirts and fleeces. Some pieces will have removable mid-layers and liners that can be swapped in and out of shells, usually through some type of zipper or buttoning system.

Base Layer

Base layers are all about moisture wicking. They are intended to be right against your skin and keep you dry. You are probably familiar with these layers from their athletic wear equivalents—Nike DriFit and adidas Climacool come to mind.

Pants

While techwear pants haven't caught on as much as shells have, they are a growing segment of the market. Even denim giants Levi's put out a moisture wicking "commuter" pant for biking that allows free and easy movement while on the go. Pants in this segment usually bring about a mix of water repellency, breathability, stretch and extra or deep pockets. Acronym has brought some interesting features to its pants including a modular system allowing wearers to add and remove pouches for even more carrying capacity.