If you want to add neat curls to your hair, you can consider a deep wave. This wave is very smooth and curves in the same direction as the deep wave, without any strands being out of place. JuliaHair's deep wave bundles have more volume, great texture on real human hair, and look very luxurious. JuliaHair sells 1pc deep wave bundle, 3pc deep wave hair extensions, and 4pc deep wave human hair weave, and bundles are available in lengths from 12 to 26 inches.