This Smart Belt Shrinks And Increases When You Put On Or Lose Weight

Overeaters and lazy trouser-wearers rejoice!

This item is known as the Belty, and it has just been unveiled at the Consumer Electronics Show in Las Vegas.

Bloomberg via Getty Images Michael Nagle

It's a prototype of a belt that will automatically loosen when the wearer sits and tighten when he/she stands.

AFP / Getty Images ROBYN BECK

The Belty will also automatically expand if you've eaten too much, and tracks your waistline measurement, offering advice when it's time to shed a few pounds.

The belt has been developed by French company Emiota, which specialises in wearable tech (or "awarable" tech, as the firm calls it).

AFP / Getty Images Robyn Beck

Emiota's Johann Gobba models the Belty.

It's still only at the prototype stage, but Emiota said it hopes to have the Belty on the market by the end of the year.

Bloomberg via Getty Images Michael Nagle

You know what this means?

20th Century Fox / firstwefeast.com

That's Christmas 2015 sorted!