roboFoil is the ASSOS ultra light cap. A new, intelligent accessory. Wear one under your helmet whenever you need optimal sweat transportation, thermo regulation and sun protection. Made to be as light as possible, it uses 2 different Interactive fabrics, to perfectly contour to your head. Taped seams for minimal volume, no pressure points and total comfort. A small accessory, but one which makes a huge difference to your comfort. roboFoil stops sweat dripping in your eyes and keeps you looking cool. Another ASSOS invention and definitely another must have. We invite you to try one. Sizing: 0 48 53cm 19 21in, I 53 58cm 21 23in, II 58 63cm 23 25in.