Loose wave bundles are a type of hair extension that features loose, natural-looking waves. They are made from human or synthetic hair and come in bundles that can be sewn or glued onto natural hair to add length and volume. Loose wave bundles can be made from different types of hair, including Brazilian, Peruvian, and Malaysian. Brazilian hair is known for its thickness and durability, Peruvian hair is silky and lightweight, and Malaysian hair is soft and lustrous.