These twin-pack Marley braid bundles are used for Senegalese Twists and Faux Locs. 
 
For the Senegalese twists, if you are an active duty member, you will need 2 packs of these (to achieve a thinner look for a bun that is within regulations). If you are a Civilian, you’ll need 3 packs for regular thickness. (Feature photo is an active duty member) 
 
For Faux Locs, you’ll need 3 packs.