Ronhill | Recharge Light Armband - Glow Red Size:One Size Indicators such as your HRV

Indicators such as your HRV status

they feature an ultra durable full MATRYX® upper

Mesh Panels: 88% Recycled Polyester

As these running shorts are part of adidas' Adizero collection

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Ronhill | Recharge Light Armband - Glow Red Size:One Size Indicators such as your HRVThe Ronhill Recharge Light Armband should sit comfortably around your upper arm, and make you more visible to others. You can set the armband to a constant glow, or to a flashing light. The battery life lasts 5. 5 hours when it's on a constant glow; and 11. 5 hours when it's flashing. This is a rechargeable armband, and does not require batteries. Technical Features Fully rechargeable USB to Micro USB charging cable Adjustable strap Weather resistant