Havana braids are especially popular for twists / out or crochet braids, you can also use them for updos, there are many other possibilities.
More information can be found on Youtube under "How to install havana twists"
These hairs save 6-8 hours of work braiding against the individual.
A little hint:
After styling, seal the hair tips with hot water. For a complete hairstyle (cpl. Head) you need 4-6 packs. You can use the hair again if you have the right care.
Further questions?
Write me a mail and I will be glad to help you.