You have two size options.

Low

Suitable for people of almost all heights. If you are very tall – over 190 cm – you may need to consider a medium size.

Suitable for relatively flexible people. If, for example, you can sit on the floor in a normal tailoring position for a quarter of an hour, with a (reasonably) good posture – and without getting back or leg pain – this is the size for you.

Height is approximately 11,5 centimeter and weight 3,5 kg.

Medium

Suitable for medium-high to very tall people – and smaller heights with limited flexibility.

If you do not feel very flexible and / or have a knee injury or other physical issues that makes it difficult to sit comfortably in a tailoring position as mentioned under ‘low’ - this is the size for you.

Height is approximately 16 centimeter and weight 4 kg.

Filled with buckwheat hulls

The Cosmic Cushion™ is a patented breakthrough design and has meditators raving! The Cosmic Cushion™'s three core features work in harmony to provide supreme comfort during meditation. This cushion's wedge profile tilts the pelvis slightly forward, helping you maintain the proper forward curve in your lower back while meditating. The Cosmic Cushion™'s tapering wings support the entire length of your thighs, and this even weight distribution eliminates restlessness and keeps your legs from falling asleep. The curved heel cradle is tailored to fit either heel snugly, allowing you to draw your feet in close to your torso, minimizing stress to your hips and knees.

The zipper in the inner cover allows you to adjust the amount of buckwheat hulls, so you get the right height and firmness. It may be a good idea to remove some of the buckwheat hulls initially and save them for later refilling of the Cosmic Cushion™. It will become a little more compact over the years.

An alternate sitting position can be obtained by pushing the tips of the Cosmic Cushion™ together, and sitting on it with the lower legs backwards and along the sides of the pillow.