X-Harness Upgrade Kit for U.S. Military Combat Helmet (ACH / LWH), USGI Issue Airborne Certified, Approved by U. S. Army Natick Labs Fully adjustable leather headband with hook and pile attachments eliminates troublesome metal clips, expedites installation, and reduces fatigue-causing hot spots Simplified two-point adjustment allows quick fitting of chin cup and retention strap No modification to helmet shell is required Integrated retention assembly with pad prevents rocking and provides increased stability during combat drills and assault operations