Headset Agu Strato [Size S/M (52/58 cm)]

The Tesero is a lightweight racing helmet. An anti-insect net is incorporated inside the helmet, on the front and on the side. With a double molded shell for extra protection without adding to the helmet's weight. Total weight is just 199 grams. The helmet features 24 ventilation holes. It fits snugly around the head and is adjustable with the direct dial system, the rotating system on the back of the helmet that lets you adjust it. Two sizes are available: S/M for head sizes from 54 to 58 cm, and L/XL for head sizes from 58 to 61 cm. You determine the right helmet size by measuring your head circumference. To do this, use a tape measure to measure the contour of the head from the eyebrows in as straight a line as possible, above the ears.