Remy hair implies that all the single hairs in a particular bundle are all aligned in the same direction from root to tip. This ensures tangle-free extensions as well as having a natural sheen to it. Double-drawn human hair means the hair has undergone a process to remove unwanted short hairs, so you are left with only the long hair for thickness and volume.

Sisters Hair Extensions are naturally drawn, meaning the hair remains in its natural form
making the blend even more seamlessly to your own hair. The hair is also easier to cut,
style and manage. We recommend treating your extensions like your own hair, so apply
a high-quality masque to keep the hair nourished, soft and tangle-free on a regular
basis.