details from thurston:

• aerobic-weight skully in Polartec® Power Wool™

• isolates plush merino wool on the interior

• with a resilient yet supple exterior

• super-comfortable design keeps only the merino side next to skin

• construction tuned for stretch, durability, and minimalism

• stretches over other headwear

• integrates under a helmet

• stays secure at high speeds

• fits within the palm of your hand

• tremendous comfort and utility 

specs from thurston:

• Polartec® Power Wool™ fabric made in US (very rare)

• Oeko-Tex® and Responsible Wool Standard® certifications

• 47% wool for thermoregulating comfort

• 42% nylon for durability

• 11% spandex for streamlined fit and freedom of movement

• black and glacier grey colors

• zero exterior branding

• internal label functions as hanging loop

• tag attachment cord reusable as zipper pull

• 24 grams

• designed in Aspen, Colorado US

• made in Vancouver, British Columbia CA