With ingenious new uses for materials like salvaged cashmere and recycled plastic, these four new hats prove that sustainability and style make perfect partners.

To create the soft Cloche Hat (shown, left), designer Sue Eggen of Giant Dwarf Designs deconstructs salvaged sweaters and embellishes them with wool felt and vintage buttons.

Ultra-thick and warm, Schuessler Headwear's Jeep Cap is constructed from EcoRagg, a blend of wool and recycled-plastic EcoSpun fibers

Stewart+Brown make use of Fair Trade Mongolian cashmere in this knit, bonnet-like Peasant Cap.

A light, fisherman-style hat for milder days, Lightside by Of The Earth uses hemp, merino wool, and Lyocell,a plant-derived fiber woven from wood pulp.