Cold Harbour Supply talk about helmet alternatives for mounting night vision devices... "Head harness? Skullcrushers? Boneless Helmets? Different head mounts have some overlap, but they also fill a different niche. In this low profile harness comparison, Ryan goes over what makes them different and why would you choose one over the other. Today, we take a look at two options we carry, the 4D Tactical SOF Cap and the Tracer Tactical Head Harness."