The Dyner cushion is a double-sided, inflatable air cushion that you sit or stand on.

Due to the air inside, its surface is unstable, which forces your core muscles to make constant, small corrections. This is called active sitting: it doesn’t support you, it makes you work.

It is a wellness and sports device, not a medical device, and does not replace medical care or physical therapy.

The two sides of the cushion are different:

• the smooth side is more comfortable, intended for longer periods of office sitting
• the spiked side provides pinpoint pressure, a more invigorating sensation

For an office chair, it is best to start with the smooth side up, and only flip it over if that feels more pleasant.

The cushion can be inflated and deflated, allowing the level of instability to be customized.

• less air: softer, more stable, for beginners
• more air: firmer, more unstable, greater challenge

If you are just starting out, begin with a softer setting and gradually inflate it firmer.

Initially, 15–20 minutes per day is recommended.

As your body gets used to active sitting, it can be gradually increased to several hours, but it is worth standing up and moving around regularly in the meantime.

The goal is not to sit on it all day, but to incorporate more active sitting into your day.

Yes. It is well-suited for balance, core, and stability-building exercises.

For example: single-leg balancing while standing on it, or performing planks or kneeling exercises on it.

When standing on it, always have something nearby to hold onto, and use it on a smooth, non-slip surface.

For those with sedentary jobs who want to make their day more active, for athletes for balance training, and for everyone who pays attention to their posture.

Children should only use it under adult supervision.

If you have any musculoskeletal complaints, consult your doctor or physical therapist before use.

Do not use, and consult your physician beforehand if any of the following apply:

• acute spinal or joint pain
• following a recent injury or surgery
• severe balance disorder or dizziness, in which case use only under supervision
• thrombosis or circulatory problems
• inflamed, swollen body part in the affected area

During pregnancy, avoid abdominal crunches; however, it can be used gently for sitting.

Wipe with a slightly damp cloth, then wipe dry. Do not use solvents or abrasive cleaners.

Store in a cool, dry place, away from sharp objects. Partially deflate before long-term storage.

Before use, always check that the valve is closed and that the surface is not damaged.