Perfect for diffusing curly hair. The pop-up silicone curl diffuser is the perfect tool for diffuse-drying curly hair. Heat resistant flexible silicone allows for a snug, secure fit on almost all hairdryers. The ultimate space-saving design is perfect for storage or travel. Heat resistant cool touch silicone surface Diameter of opening is 5.4cm (2 1/8”) and fits barrels up to 4.7cm (1.85”) Fits most dryers and brands Great for at-home or collapses for travel Lightweight design slips right onto hairdryer and stays in place Distributes air evenly so that curls dry without frizz