Trailhead Fleece

The Trailhead Fleece is built from Polartec® Microgrid - the same fabric behind a certain cult-favorite Colorado hoodie that hikers wait in line for hours to buy. We brought that same warmth-to-weight magic to your dog.

The Trailhead fits a wide range of dog builds and stays put whether you're scrambling talus or logging trail miles. It layers seamlessly under our Switchback Puffy or Ridgeline Shell when conditions turn, or wears alone on crisp morning starts and cool evenings at camp.

Handmade in Colorado. One layer at a time.

Fabric: Polartec® microgrid (100% recycled polyester)
Closure: Top-release buckle with adjustable webbing

Weight by Size:
- XS: 2.8oz
- S: 3.9oz
- M: 5.1oz
- L: 6.5oz

The same grid fleece construction used in premium human base layers. The raised grid pattern creates air pockets for insulation while reducing overall weight. Made from 100% recycled polyester - warm, light, responsible.

Chest girth is the most important measurement. Measure around the widest part of your dog's ribcage, just behind the front legs.

- XS: Chest 14–17" / Back 10–12"
- S: Chest 17–21" / Back 12–15"
- M: Chest 21–26" / Back 15–18"
- L: Chest 26–32" / Back 18–22"

Between sizes? Go up - our layers are designed to stack without sizing up.

View complete size guide with measuring instructions and breed examples → Size Guide