Quick Answer
A zafu is a round meditation cushion designed to tilt the pelvis slightly forward, allowing the natural lumbar curve to be maintained during long seated meditation. Without this tilt, most people collapse into the lower back after five to ten minutes. Sit on the front third of the cushion with crossed legs on the floor in front of it.
The zafu originates in Japanese Zen Buddhist practice and has been used in seated meditation for centuries. It is deceptively simple — a firm, round cushion of kapok or buckwheat hulls — but the postural effect it creates is significant. Most people who meditate regularly on a proper cushion find their sitting time can be extended considerably compared to sitting on the floor or in a chair.
Zafu vs Zabuton
The zafu is the round cushion you sit on. The zabuton is a larger, flat rectangular mat placed underneath, padding the ankles and knees from the hard floor. Together, they form the standard meditation seat. On carpet or a yoga mat, a zabuton is less essential. On hard floors, it makes a significant difference to knee comfort during long sits.
Sitting Positions It Supports
The zafu works for cross-legged sitting (sukhasana), quarter lotus, half lotus, and the seiza (kneeling) position — though in seiza, the cushion is typically tilted on its side or replaced by a wedge. The key is that the cushion lifts the hips above the level of the knees, allowing the pelvis to tilt forward naturally rather than collapsing backward.
Height, Firmness and Filling
Buckwheat hull filling is firmer, slightly adjustable (you can remove hulls to lower the height), and allows air circulation, making it cooler. Kapok is softer and lighter but compresses over time. For most people, a cushion height of 10–15cm is appropriate. If your knees sit significantly above your hips in cross-legged position, a taller cushion or bolster used on its side is needed.
Why It Makes a Real Difference
Physical discomfort is one of the most reliable ways to interrupt meditation practice. A well-chosen cushion removes one of the most avoidable distractions. Most serious meditators consider their cushion among their most important practice investments.
Frequently Asked Questions
Can I meditate on a yoga bolster instead of a zafu?
Yes — a firm bolster used lengthways or on its side provides a similar pelvic tilt. It is less stable than a zafu but an excellent alternative if you already own one.
How high should my meditation cushion be?
High enough that your hips are at or above knee level when sitting cross-legged. This typically means 10–17cm for most adults.
Should I sit in lotus pose to meditate?
No. Lotus is not required — it is not even traditional in many lineages. Any comfortable seated position that allows a straight spine and sustained stillness is appropriate.
Can I use a meditation cushion for yoga?
Yes. Zafus and zabutons are useful as props in yin yoga, restorative yoga, and pranayama practice.
What is the best filling for a meditation cushion?
Buckwheat hulls are generally preferred for their firmness, adjustability, and longevity. Kapok is softer and lighter but compacts over time.
