read more We designed this ultra-light, barely there hat so nothing gets in your way when you’re chasing a new personal best—lightspeed ahead.Fabric is four-way stretchFeaturesDesigned for: RunGoodbye sweaty forehead: Interior Mesh fabric sweatband wicks moistureAdjustable: Flexible brim and adjustable back closure Reflective: Reflective details on the brim keep you on the radar Lululemon Lightspeed Run Hat