ESULTRA: 6-point pin-lock self-sizing suspension• 6-point Flex-Gear® pin-lock suspension• Flex points and nape cushion• Large, easy-to-turn ratchet knob• Large, absorbent cotton brow pad• Vertical height adjustments (two front, three rear)• Replacement brow pads available• For classic models C30 and C33 ESRTSL: • 6-point self-sizing ratchet suspension• Large, absorbent cotton brow pad• Vertical height adjustments (two front, three rear)• Replacement brow pads available• For classic models C30 and C33