Boon Decor Meditation Cushion - Rectangular Zafu Buckwheat & Kapok Fill Organic Domestic Buckwheat Fill in one side and Kapok in the other. This is like having two types of cushions in this versatile zafu seat. High Seat Zafu 18" x 12" x 8" loft with Carry Handle Perfect for meditators who need a higher rise or with knee problems. Zip off insert to adjust firmness Zip off cover for dry cleaning Best Quality Design and Craftsmanship by Boon Decor.