D3O Back Pad Level 2 ViperFULL SPECSD3O patented technology Certified to exceed the performance requirements of EN1621-2:2014Level 2 Airwave Technology for improved air flowFlexible ergonomic design for comfort and protectionThickness: 18mmD3O Back Pad Level 2 Viper $49.99 Out of Stock SIZE CHART SKU: 5174-001-000-400 Out of Stock Quantity -+ Find in-store WARNING for California Residents