Made of revolutionary space-age duration. Far Superior to hard rubber of nylon because its strong, flexible, unconditionaly guranteed against breakgae. Flame treated, non scratching, super smooth, teeth-glide easily throught thickest hai. Not affected by hair solution or chemicals. Highly heat-resistant. Ideal for blow -drying. Designed by a professional and used by professionals throughout the world. Finest salon quality made for today's wings and hairstyles