I seek your help for a more humble type of caving...I must dive into crawlspaces and attics, and I'm finding it very unpleasant without the correct gear. In crawlspaces I go elbows and knees with 12" to 18" clearance, down for 4 hrs at a time, my worthless "bump cap" sliding all over, my headlamp sliding off the cap. I am looking for a very low profile helmet on which I can mount the light. I don't need serious padding because falling is not a risk...I just need the hard shell to keep the roof and floor nails out of my head, and enough padding to be comfortable, along with a chinstrap to keep the darned thing in place.
Can you please recommend a low profile helmet that will help me get the job done? The more it's like a "hard shell" for my head that sits very close to the skull, the better.