1. Suitable for Dyson HD01 to HD16 series hair dryers, not compatible with HD17 series 2. 2-in-1 wave + curl diffuser, disperses airflow in 2 different ways 3. Dome mode: can hold and dry more hair at a time, suitable for waves or curly hair, making hair look more contoured 4. Diffusion mode: air is fully diffused into the deep hair through the longer curling pins, forming textured, fluffy curls 5. Size: 10 x 13.5cm 6. Weight: 265g