Sidewinder 20° (20F / -7C) _wf_exc The UpDown logo is inspired

The UpDown logo is inspired by vintage roadside signage and is fully reflective for those late night runs down that old country road

while the seamless leg hems with silicone-infused grippers ensure a secure fit without restriction

but your footwear shouldn't be

With a CloudTec® cushioning system for stable runs

Sidewinder 20° (20F / -7C) _wf_exc The UpDown logo is inspiredTraditional mummy bag optimized for side sleepers. Specifically designed for the over 60% of people who sleep on their sides, the second generation of our patented Sidewinder side sleeper technology ensures warmth, comfort, and ease of use in any position you settle into. Constructed for comfort, with additional body mapped insulation to optimize warmth where you need it and provide cushioning and support at the hips and shoulders, easing pressure