Ergonomic memory foam cushion (contour design) with 5" thickness provides tailbone relief and posture support for office chairs, car seats, and home furniture.HOW TO SET UP:1. Unzip and remove cover if needed for initial inspection.2. Position the U-cutout at the rear for tailbone relief.3. Place cushion directly on chair seat with non-slip grips facing down.4. Sit and adjust for optimal lumbar contour fit.HOW TO USE:Use for 4-8 hours daily to build posture habit without overuse.Pair with lumbar pillow for full back support if needed.Avoid direct heat sources to preserve foam integrity.Rotate position periodically to even wear.IS IT SAFE:If slipping occurs, clean grips and ensure flat surface.For insufficient support, check if foam has compressed; replace after 2 years.If odor develops, air out in sunlight for a day.CARE:Remove cover and machine wash in cold water; air dry completely.Spot clean foam with mild soap; do not submerge.Store in cool, dry place when not in use.Vacuum grips monthly to remove debris.COMMON QUESTIONS:What if slipping occurs?Clean grips and ensure flat surface.Does it help with tailbone pain?Yes, contour design provides coccyx relief and posture support.Is the cover removable and washable?Yes, zipper design allows easy removal for cleaning.Will it slip on my office chair?No, non-slip rubber grips and mesh bottom keep it in place.What are the dimensions?Approximately 16.5" x 11.5" x 3" thick.Can it be used in a car seat?Yes, designed for car seats, office chairs, and home furniture.Does it provide lumbar support?Yes, integrated lumbar and back support for ergonomic alignment.Is it suitable for long hours at a desk?Yes, orthopedic design corrects posture and relieves pressure.