Centurion Coolcap Bump Cap Our fashion-led CoolCap bump cap combines high ventilation and high flexibility. Fitted over an ABS liner, the bump cap can provide lightweight head protection, reassuring protection against minor bumps and scrapes to the head. Data Sheet - Instructions Main Material: Shell: Acrylonitrile-Butadiene-Styrene (ABS)ⓘ"A" brings heat & chemical resistance and tensile strength. "B" brings impact strength, toughness and good performance at low temperatures. "S" brings the glossy appearance, process-ability, and rigidity. Cap Cover: Brushed Cotton Pads: Brushed Nylon Fabric covered EVA foam pad Headband: VELCRO® Brand fastener with tuck-in strap eyelet Specifications: Weight: 150g Size: 54-59cm Peak Type: Standard (50mm) Standard: EN 812:2012, -40°C Why ABS is chosen for the Centurion Bump Cap? The optimal choice to protect your most important asset Made from 3 Distinct Monomers to Bring a Set of Performance Characteristics Structural difference ABS and HDPE : Complex Matrix vs Linear Chain Compressive Strength: Excellent performance of ABS to maintain the integrity of the shape and resist structural deformation under stress. Tensile Strength: Excellent performance of ABS to maintain its structural integrity when exposed to a projectile. Hardness: ABS requires a very high pressure to ‘distort’ the structure.