Wave Builder Durag. WaveBuilder classic durag is made of breathable, cool and comfortable fabric. It is cut to the perfect size for a tight, smooth and great looking fit. All seams are sewn with a high stitch count to ensure durability. For wavers, our classic durag lays hair down tightly for maximum wave building. Long adjustable ties allow for personal style and desired levels of holding. This high quality, safe, effective WAVEBUILDER product is made by us with only the best available materials.