Tried and tested: Lenstec offers Julbo Sports frames

Aerolite, supplied by Lenstec, weighs in at just 23g while the Aero, which sports a brow bar, weighs in at 25.5g. Coupled to both is the Zebra shield lens in photochromic Trivex. The base 6 shield provides a wide field of view with the tint coping with all light levels on bright and overcast days.

The Aerolite is a featherweight piece which performs well for running and cycling, it is light, secure and the airflow around the shield prevents fogging. The Aero feels more suited to cycling with its brow bar offering a barrier to the sun and the ingress of dirt, debris and too much cold airflow on fast descents. The Aero, also on a base 6, was a tighter fit, useful for the more head-down sport positioning. Both models use GripTech features such as the wishbone temple to cushion the ear and 3D mouldable nose pads, both have a vented temple and lens mounting to increase airflow.