It holds 5 to 6.5 liters of tap water, and the tank is completely filled before the board goes into use.

The board is 7 kg (15 lb) empty, and a full 6.5 liters adds about 6.5 kg, so a filled board is around 13.5 kg and still moves room to room in one trip.

The board takes users up to 250 kg (551 lb). If you have a musculoskeletal or balance condition, check with a doctor before training on it.

It measures 64 cm across and 18 cm tall, and it stores on its edge against a wall or under a bench. Empty the base first if it is being carried any distance or stored somewhere cold.

Squats, lunges, sit-ups and push-ups are the four the board is sized around, along with plain standing balance training.

NOHRD covers it for one year from the date of initial shipment, for private and commercial use, and registering it within the first year extends the cover to two years on all components, wooden components included.

A dome or a roller is a fixed pivot, so the tilt it gives is repeatable. Water has no pivot: it runs to the lowest edge, arrives a moment after the board has moved, and starts moving again as soon as anything changes. The surface under your feet therefore keeps changing while you are on it.

No. It arrives built in one package of 66.5 x 66.5 x 19.5 cm weighing 9 kg, and the only thing to do is fill the base and hand-tighten the sealing screw. The Allen key that comes with the screw is the only tool involved.

Each of the six is a real wood veneer on the footplate: Shadow is the black-stained one, and the aged character finish is the Vintage.

Yes. The high user rating and the sealed base suit a shared room, and the board wipes clean with a damp cloth between users.