Hand-Tied wefts are exactly what they sound like! The hair is woven together by hand by an actual person by hand, giving each weft custom attention; creating the absolute thinnest weft possible! They are SO seamless because they are hand made and extremely flat, making them good for those with thick to fine hair. 

But Several techniques are available for beaded weft hair extension methods;

Invisible wefts 

Single wefts 

Double Wefts 

Absolute thinnest Wefts is the Hand-Tied wefts