Designed for dynamic movement, the Heat Puff collection combines aerospace-inspired Active+ insulation for lightweight, breathable warmth on chilly runs. Practical side-snap closures make it easy to layer and quick to wear over shoes and tights. Adjustable elastic waistband ensures a secure, comfortable fit. Side pockets keep essentials handy, and reflective details provide enhanced visibility in low-light conditions, making it the perfect piece for winter runs and outdoor workouts.