We have now combined 2 products that come hand and hand. Our U-Curve Pillow designed to use immediately after post-op to sit, ideal to rest or sleep. After 2 weeks post-op you can transition to the Curvas Booty Pillow to used for the remaining 4 weeks post-op to sit. This doesn't mean both can't be used. The U-Curve Pillow is also ideal to drive with.