Patented Bulge For Lower Back Targeted Support: Auvon Team Has Collaborated With Physical Therapists To Innovate The Ergonomic Lumbar Support Pillow With An Innovative Precision Support Design. Based On Ergonomic Theories, The Scientific Position And Thickness Of The Bulge Can Offer A Natural Fit To The Lumbar Spine Structure To Relieve Lower Back Pain From Long Sittingergonomic Zoning Design For Lumbar Comfort: This Back Cushion Is Crafted With 4 Ergonomic Zones To Cradle Your Back For Long-sitting Relief. The Upper Curved Zone Can Fit Your Upper Back With Contoured Comfort. The Lower Support Zone Is Designed With High-density Memory Foam For Targeted Support. The Wrap Zone Of Both Sides Conforms To Your Lumbar For Pressure Distribution. There Is Also A Pelvic Support Zone On The Underside Of This Back Support Pillowbreathable And Cool Sitting Relief: Crafted With A Honeycomb Breathable Fabric And Integrated With Mesh Side Stitching, This Chair Pillow For Back Support Can Deliver Ventilation With Lasting Freshness. Even After Prolonged Sitting, The Chair Back Support Pillow Keeps Your Back Cool And Comfortable From Sweating And Stuffy Feelingsstay-put Design: The Dual Straps And The Anti-slip Backside Can Make The Lumbar Support Cushion Remain Firmly In Place For Continuous Support Comfort. Say Goodbye To Constant And Hassle Sliding And Readjustments With This Back Support Pillow For Office Chairsupgrade Your Seats And Protect Your Lumbar Health: This Lower Back Pillow Is Ideal For People Who Spend A Long Time In An Office Chair, Car Seat, Or Gaming Chair To Improve Posture And Soothe Long-sitting Fatigue. It Measures 18' X 15' X 4.5', And Can Fit Most Chairs To Provide Lasting Lumbar Support And Protect Your Lumbar Health Anywhere You Sit