Flexible Vented Design Adjusts Tension Based on Hair Type. Detangles Quickly & Gently on Wet & Dry Hair. Ultra gentle Memory-Flex™ double bristle Great for detangling fine, chemically-treated or fragile hair. Also best for extensions. Dual-Curve Shape Perfectly hugs the scalp for incredible comfort & superior styling control. Every bristle is actively styling with each stroke. Provides great scalp massage. Ergonomic handle Unibody snag-free design. Special anti-slip coating.