AWE AWEViz Twin LED High Visibility Cycling Helmet Light/Running Armband Set x 2 Transparent Case With 2 x Red LED's For Maximum Brightness. Transparent Case With 2 x Red LED's For Maxiumum Brightness. 2 Pack Of Armbands 2 Functions: Flash & Constant. On/Off Switch For Easy Turn On/Off Ideal For All Outdoor Activities including Running,Cycling, Walking.... Can Be Worn On Arms,Legs & Fits On Bicycle Helmets. High Visibility Reflective Patch For Added Visibility Velcro Strap To Fit All Sizes, Alkaline Batteries Included