Thank you for your question.It is important to consult with your surgeon about their post-operative instructions, as each surgeon has slightly different post-operative protocols. I recommend to my patients that they do not sit on their bottoms for long periods of time for the first three weeks. The first week I do not recommend any sitting or pressure on the buttocks, days 8-14 the patient may sit up to 5 minutes two times per day. Days 15-21 the patient may sit up to 9 minutes five times a day only then days 22 and beyond sitting is fine as long as the patient is comfortable. If you must sit for long periods sooner, I definitely do recommend the BBL pillow and getting up every 10-15 minutes to walk around until you are at least three weeks post op. Sitting too long and too soon after a BBL can kill some of the fat cells. I hope this helps.Best of luck in your recovery!Sincerely, James Fernau, MD, FACSBoard Certified ENTBoard Certified Plastic SurgeryMember of ASPS, ASAPS, ISAPS, The Rhinoplasty Society, AAFPRS, OTO/HNS, ASLMS