I didn't notice it to be heavy at all and that's a great question.
Here's some real weights (my scale / all measured today) on helmets I have. All are size medium:
Bontrager Rally MIPS : 380 grams
Giro Montaro MIPS : 381 grams
Smith Rover MIPS : 373 grams
Giro Fathom (w/ visor) : 276 grams
The Fathom is notably lighter but it is basically a road lid with a visor. The Rover has less coverage - and a less 'in the helmet' feel - than the Montaro or Rally.
Nov. 4, 2017, 1:39 p.m. - Andrew Major
I didn't notice it to be heavy at all and that's a great question. Here's some real weights (my scale / all measured today) on helmets I have. All are size medium: Bontrager Rally MIPS : 380 grams Giro Montaro MIPS : 381 grams Smith Rover MIPS : 373 grams Giro Fathom (w/ visor) : 276 grams The Fathom is notably lighter but it is basically a road lid with a visor. The Rover has less coverage - and a less 'in the helmet' feel - than the Montaro or Rally.