A little info on the micro weft method; It's more of temporary extensions, it lasts 4-6 weeks depending on how well you take care of them. They only take about 1 hour, they are comfortable to wear and you can use the hair over and over again because they are high quality human hair.
Here is a before and after of Ms Kortni
BEFORE

AFTER

Not only are they great for length but they're awesome for volume and thickness!