K2 Dyna-Thermal wears like a shirt yet protects like a coat. Enjoy harsh-weather protection as well as freedom of movement for any outdoor activity—from construction work and motorcycle riding, to hunting, fishing, hiking, skiing and golf.

Helps you love cold weather

Equinoxx K2 Dyna-Thermal is a shirt that'll keep you warm and comfortable in the harshest weather. It retains body heat, blocks wind, and resists rain. It's breathable, so you don’t overheat after coming in out of the cold. Thanks to its special material and construction, it also gives you the flexibility and freedom of movement to perform at your best at work or play.

Ideal for All Kinds of Outdoor Activities

K2 is ideal for anyone who works outdoors and could benefit from freedom of movement as well as protection from cold, windy, and wet weather—from postal workers and courier drivers to traffic and school crossing guards; from cable installers and linesmen to construction and oil rig workers.

K2 is also great for any kind of outdoor recreational activity, such as hunting, fishing, hiking, camping, golf, skiing, ice skating, bird watching....You name it! It's also good for motorcycle riders who need to block the cold wind.

Police and security personnel who already have our Stage 3 as a body armor base layer may want K2 for their cold-weather leisure activities.

Innovative Materials & Construction

The K2 Dyna-Thermal is soft, stretchy and not bulky, promoting superior comfort and mobility. Yet it's constructed with a state-of-the-art heat-pressed, triple-layer fabric that provides highly effective thermal protection. The top layer is a stretchy polyurethane fabric. The middle layer resists water and wind. And the inner layer, which touches your body, is a soft, grid-thermal fleece.

The "Grid" design structure of the base layer’s fleece inner liner is the latest technology to reduce fabric weight while increasing warmth and compress-ability. This form of construction enhances both wicking efficiency and breath-ability by generating channels of targeted touch points that absorb and diffuse moisture vapor for faster evaporation.

Features of 221B Tactical Equinoxx K2 Dyna-Thermal Cold-Weather Thermal Protection

• Full 360° Grid Thermal Protection
• Maximum Body Heat Retention
• Temperature Rating: Sub 15° F / -9.45° C
• Superior Mobility
• Water Resistant
• Wind Blocking
• Breathable, for Coming In Out of the Cold
• Regular Fit
• Extended Compression Sleeve Cuffs
• Extended Torso Length - Stays Tucked In
• Mock Neck Design