You deserve only the best materials for your face to keep you looking your best. That's why each band in this set of 40 bands is made from high-quality, medical-grade materials . Each band is also thin and breathable , making them perfectly comfortable to wear. In addition, the tapes are also designed to be invisible, ensuring that they do not stand out or disrupt your look in any way. The bands are also light, waterproof and perfectly elastic. This helps ensure they don't weigh down your face or make the skin too tight.