**Discover the Ultimate Warmth with Arc’teryx’s Rho Heavyweight Zip Neck Base Layer**
When the temperature drops and the cold bites, the Rho Heavyweight Zip Neck by Arc’teryx is your go-to base layer for unrivaled warmth and comfort. Designed for the harshest winter conditions, this base layer combines advanced materials and innovative features to keep you snug and active, no matter how low the mercury goes.
**Stay Warm, Stay Mobile**
Crafted from Polartec® Power Stretch® Pro, this base layer offers a perfect blend of warmth and flexibility. The highly durable nylon exterior ensures a smooth fit under your outer layers, while the soft, brushed polyester interior traps heat effectively, keeping you cozy during rest periods or in extreme cold. The deep front zipper not only makes it easy to put on and take off but also provides quick ventilation when you need to regulate your body heat.
**Unmatched Fit and Mobility 
