Rockman Forestry / Arborist Vented Helmets - Orange Lightweight helmet weighs less than .7 pounds Has a sophisticated one hand locking ratchet suspension adjustment The 4 point textile chin strap and anti-slip headband offer the perfect comfort Energy-absorbing shape can react upon impact by intended partial deformation of the shell DFT comes with 12 DeFormaTec (TM) impact points, which will stretch in case of a serious impact