Technical Woobie™ - ACM™ Warm 600

Country of Origin:
  • 100% American Made
  • ACM 600 Merino Wool
  • Nylon accents for abrasion and wind resistance 
  • Adjustable hood
  • Merino lined hand warmer pockets
  • Discreet cable management. 
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Product Overview

Fully featured with top of the line materials including FS ACM 600 Merino for warmth and premium nylon accents add abrasion and wind resistance. We incorporated a modest tail, high collar with adjustable hood, thumb holes, as well as generous handwarmer pockets lined with FS ACM 100 Merino. The Full-length zipper and pockets utilize premium zipper hardware and pulls. Buttonholes inside the handwarmer pockets along with cord loops along your internal zipper seams let you route your earbuds for easy and discreet cable management. Hood drawcords stash down inside for windy days and an external loop hanger on the back gives you a handy place to secure the garment.

The Technical Woobie offers a great everyday style match with some of the most high-performance material combinations available. It will quickly become the one piece you will want to take everywhere. 100% made in the USA with 100% USA materials backed up by our standard lifetime warranty on materials and craftsmanship.

Care instructions for FirstSpear American Wool can be found here.


The Technical Woobie is a tighter fit garment. If you prefer a loose fit select one size up from what you regularly wear (L goes to XL). If you like a closer fit, commonly called a "Climbers Fit" then select your normal size.

Sizing Small Medium Large XL 2XL 3XL
Neck 19 ¾" 20 ¾" 21 ¾" 22 ¾" 23 ¾" 24 ¾"
Chest 42" 44" 46" 48" 51"  54"
Waist 40" 42" 44" 46" 49" 52
Sleeve Length 34 ¾" 37 ¾" 35 ½" 37" 38" 39