What is the difference between hand tied and machine weft?

Machine weft is sewn by a machine to create the track . The machine weft has a thicker weft . We make our machine weft from Indian Hair.

Hand–tied weft is sewn by hand. The hand–tied weft has a thinner weft and lies closer to the head. We make our Hand-Tied wefts from Russian Hair, which has only one donor. All the hair goes in one direction.