We were skeptical about this product at first.  After playing with a demo unit from the local distributor for a few days we were conviced and placed our order.  When prepared with properly ground espresso, the Twist produces amazingly drinkable shots on par with some commercial machines.  Pair this with a Hario Skerton and take it on the road and you are on your way to espresso heaven (did I just write that). Here's the scoop from the manufacturer:

The elegant TWIST was designed from the ground-up for incredible performance, ease of use and exceptional espresso. The TWIST is incredibly easy to use, requires no electricity, and makes delicious, smooth espresso time after time.

The TWIST's patent-pending engine effortlessly produces single or double shots from either fresh ground coffee or ESE pods. Just put in the ground coffee or pod, pour in some hot water and pull the trigger. Seconds later you can enjoy a perfect espresso extraction. Clean-up is just as easy: give the TWIST a quick rinse and you’re done.

The TWIST obtains its operating pressure from the same recyclable and affordable 8g pressure cartridges that have been safely used in whipped cream dispensers worldwide for over 80 years. Each cartridge has sufficient pressure to make up to four double shots or eight single shots of espresso. The TWIST’s patent-pending engine regulates the cartridge to extract a delicious single or double-shot of espresso at the perfect pressure. The result is an ideal espresso extraction with a clean and clear taste that makes the most of every bean.

Package Includes:
1 x Pressurized double-shot (14-21g) basket
1 x Standard double-shot (14-21g) basket
1 x ESE pod adaptor and single-shot (7g) basket
1 x 53mm tamper
4 x 8g N2O pressure cartridges
1 x Travel pouch
1 x Drip-catcher coaster
1 x O-ring replacement kit

Weight: 3 lbs. Width: 3.5" Length: 10.5" Height: 3.5"