The world’s lightest helmet, it proudly says on the side of the Limar Pro 104 helmet that has just arrived in the BM office for testing.

170g is the claimed weight for a medium, and clearly puts its ahead of other lids currently available. It’s been achieved while still offering 22 ventilation ports with built-in mesh to keep flies and other airborne insects out of your hair.

The turn-dial retention system is easy to adjust and uniquely there’s a size guide visible through a small window in the plastic of the strap. Just two sizes are available with head sizes from 53 to 62cm covered.

The Limar Ultralight Pro 104 costs £119.99 and comes in Blue, Red, White, Silver and is available from www.todayscyclist.co.uk. More info at www.limar.com.