Deep wave bundles are a type of hair extension that has a distinct, defined "S" shaped curl pattern. This curl pattern gives the hair a voluminous and bouncy appearance, making it a popular choice for those who want to add length and fullness to their natural hair. Deep wave bundles are made from high-quality human hair that has been carefully selected and processed to maintain the natural curl pattern. The hair is typically sewn onto a weft, which can then be installed onto the scalp using various techniques, including sew-in, glue-in, or clip-in methods.