Flexible Vented Design Adjusts Tension Based on Hair Type. Detangles Quickly & Gently on Wet & Dry Hair. Flexible Memory-Flex™ dual length bristle. Perfect for detangling hair of regular thickness. Comfortable ball point tips. Gentle on hair & scalp. Flexible Vented Head Design Adjusts tension based on hair type. Extra large vents guarantees brush is always dry & free of moisture (unlike cushion brush). Ergonomic handle Unibody snag-free design. Special anti-slip coating.