MIDWEIGHT BASE LAYER AND MOISTURE TRANSFER FIBERS - Our base layers are designed for warmth, performance (including but not limited to breathability and moisture management), and wearable comfort. The adventure is yours, we'll keep you warm and comfortable. An essential feature in all our products, Hot Chillys exclusive moisture transfer fibers (MTF) move moisture away from your body by employing hydrophobic yarns to wick away perspiration, thereby keeping you dry and comfortable. RELAXED FIT AND UPF 30+ - Designed with a looser fit that lies gently on the skin without binding. Although relaxed fit, the fabric as 10% spandex. Therefore the silhouette is designed to accommodate movement. Often used in lifestyle wear, as well as for a base layer. Ultraviolet Protection Factor. Sunlight includes rays of ultraviolet (UV) radiation, and Hot Chillys products are designed to help protect you! WARMTH FACTOR 7/10 - Ranked from Mild to Hot, the Warmth Factor Thermometer tells you how warm each of our products is. Warmth Factors 6, 7, and 8 are considered Midweight and are very popular for most cold-weather activities. 4-WAY STRETCH - Fabrics with this elastic feature will hug your body and move with you, eliminating extra bulk, providing a full range of motion, and improving performance. Nearly all our body-fit products include a 4-way stretch. Some of our relaxed fit products include a 4-way stretch as well. SMELL BLOCKING PROPERTIES AND ACTIVATED CARBON - Fabrics that feature the OBP label have been specially treated with our secret "chilly seasonings". These products are designed for optimum freshness and odor control and will remain in the fabric for the first 20-30 wash cycles. Activated carbon incorporated into the yarns enhance thermal regulation and odor blocking characteristics of this product. Our new Clima-Tek fabric features a buttery soft, cottony hand, with all of the performance of a polyester/spandex. Perfect for summer camping in the mountains and winter wear anywhere. Clima-Tek fabric provides a comfortable, breathable fit for any climate or location. It's ideal for any type of activity, from a walk in the park to a mountain hike.

Designed for movement, Clima-Tek fabric is lightweight and highly durable. You'll experience superior stretch and recovery properties, so it's easy to move freely while staying comfortable. Its advanced hydrophobic properties wick moisture away and keep you dry and fresh, no matter the temperature.