Purchased last April on the 30th installed in May only wore for four months. Only used heat on them once a week. Every two time weeks I would get them deep conditioned since my friend is a hair stylist they have been dyed a jet black. I had them removed in September to go lighter. Have been stored in ziplock bags to keep in moisture so hair doesn’t dry out. Also I sleep with a silk pillow to help with minimizing wear in them and braid them at night when had them in. Oiled them morning and night. Theee extensions were definitely babied :) One measures at 7 inches other one is 10 the last two are little over 12 inches long each. Weight 160 grams Also I’m 5’5 for reference I know they look longer on shorter people than taller