Make it warmer.
Do it smarter.

Shop Men's Shop Women's

About the technology

Smartloft™ technology is the Merino wool solution to performance insulation—offering versatile warmth and breathability.

Circular Merino Insulation  

We use scraps from our industry-leading Classic Thermal Base Layers to construct a 50% recycled wool interior that helps keep you warm and keep perfectly good materials out of landfills.

Let’s talk layers.

Smartloft™ gear can be worn as an insulating mid-layer under a under a shell or as a packable outer layer in friendlier conditions. Pair your Smartloft™ apparel with a Smartwool base layer to create a performance-focused kit that works with your body as you move—providing warmth you don’t need to shed.