The texture of velvet can effectively grip bio hair and prevent items like wigs, hair extensions, or other hairpieces from sliding. Velvet has a soft, dense pile with tiny fibers that create friction when they come into contact with hair. This friction helps secure the hairpiece in place, making velvet an ideal material for wig bands, headbands, or the interior lining of hats and headwear designed to stay on securely. The grip provided by velvet helps ensure that your "investment hair," such as wigs or extensions, stays in place without slipping, which is particularly beneficial for those with fine or slippery hair textures.