A Zafu meditation cushion is a yoga accessory designed to help maintain a straight spine, preserving its natural curve during meditation. Meditation involves sitting still and observing the breath, directing attention to the here and now. For those who find sitting cross-legged challenging, a meditation cushion can make it easier to keep the knees lower than the hips, facilitating a more comfortable posture. This support helps maintain focus and stay present in the here and now during sitting meditation.