Each bundle is 3.5 oz. for a full sew in we recommend 3-4 bundles. If you desire your hair to be full with lots of volume or if you go longer then 26" we suggest you go with 4 bundles. Remember the longer the length the shorter the weft. This curl can be worn straight by using a flat iron. You can wear it wet for a natural sexy curl perfect for the summer. When washed it will revert back to its natural state. This Virgin Brazilian hair is alive and full of beautiful curls. Its texture is curly and soft with lots of body. It maintains a natural shine with lots of movement.