Armsleeves with Climacool technology for cool, dry comfort on race day.

The Boston Marathon 2026 Armsleeves reflect the focus and intensity of race day, built for runners who want performance-led support inspired by one of the running world’s premier events. Soft single jersey fabric combined with adidas Climacool technology help you feel cool, dry and ready, thanks to advanced materials that wick and disperse sweat for distraction-free performance. A reflective logo and adidas branding complete a clean, purposeful look, celebrating Boston Marathon heritage in a piece designed for runners who value clarity, function and intent.