A Running Outer Layer: Lululemon Engineered Warmth Half Zip Going for an outdoor run? This Lululemon Engineered Warmth Half Zip ($148) is an essential. It will keep you comfortable when the wind is blowing, and the blue colour stands out from the crowd. Image Source: shop.lululemon.com Lululemon Engineered Warmth Half Zip $148 from shop.lululemon.com Buy Now