Top Description Reversible, lightweight technical headband for cold-weather warmth with excellent breathability and moisture-control. Read more Sizing One size fits most Cards full-bleed half-split features Cold weather running comfortBreathable, moisture-wicking Mercury Knit excels at transferring sweat + heat away from the body for comfort during prolonged efforts For when the mercury dropsLightly peached on both sides, Mercury Knit has an exceptionally soft hand feel while providing cozy warmth + thermoregulation without added weight Won't stretch outDurable nylon easily stretches with you and retains its shape while resisting odors Snug + comfy fitMinimal flat-lying headband with a 20” circumference that stretches to accommodate most sized heads (small~large hat sizes) ReversibleTwo-sided tonal color combo Stay seenSignature reflective logo on front and “watermark” reflectivity on back increases visibility in low light materials + specs Mercury78% nylon, 22% spandex Garment made in Vietnam sustainability Mercury fabric is bluesign® certified meaning it is free from harmful chemicals and is fabricated in a way that meets a high environmental standard. Learn more about our sustainable initiatives here. full-bleed