The photo shows a side-view collage of buttock projection and the type of sitting concern you are asking about, but the actual pressure on the grafted fat cannot be measured from a picture. After a BBL, the safest approach is to avoid direct pressure on the buttocks until your operating surgeon clears you. A zero-gravity chair may reduce some pressure, but it can still load the lower buttock or central buttock depending on your angle, body position, padding, and where the chair contacts you. A faja helps with compression and swelling control, but it does not protect the transferred fat from pressure. If the garment is too tight, folded, or pressing into one spot, it can also create localized pressure. Follow your surgeon's specific sitting instructions, because timing varies by technique and postoperative course. Many surgeons advise avoiding direct sitting for the early recovery period and using a BBL pillow or support under the thighs so the buttock is offloaded when sitting is allowed. Keep sitting sessions short at first and change position often. If the chair causes pain, numbness, skin color change, increased swelling, new asymmetry, or pressure on incision areas, stop using it and contact your treating surgeon. It is better to send your surgeon photos of the setup and ask whether it is acceptable for your exact stage of healing.