A single bundle of Lareine Hair Co.'s Luscious Wave weighs from 3.5-4.0oz. It is recommended that for a full sew-in you use at least two (2) bundles if the desired length of style is 16" inches & under and three (3) bundles if the desired length of style is 18" inches & up. The longer the length of the bundles, the more elongated the curls will be; thu