Can someone help me? I need a helmet for a retro ride next week and can't find out what the differences are between these two...tried on the SIM and it felt good, but obviously want the best
Ignore getting the best, get what's comfy & cheapest and has the best attachment (strap/headband) for your use. They all protect your head
I thin the SIM is lighter than the DIM, check their website
Probably all down to the strap/band difference ?
I have the SIM in black/red as I got it at the cut down prices.