The Flow is a strong flexible wire, not unlike the bendy pens some of us had as a kid, but covered with soft, sumptuous silicone, with SinFive's antimicrobial properties. The silicone is plush, with a matte texture and medium firmness. It is a bit of a lint magnet, like most silicone, but the matte texture holds lube well. It comes with a smooth European style bullet (longer and thinner than the North American watch batter powered ones) which can be used in the twists of the flow to add vibration. The bullet is powered by 1 LR1 battery bullet which is included
The Flow is 11 inches of twisted ellipse. It can be bent to target your pleasure spots and will withstand vigorous thrusting without loosing it's shape. The bullet that is included can be twisted within the Flow to add stimulating vibrations. The Flow is very durable, but the packaging warns: "Other more extreme applications should generally be possible several times, but we do not assume liability for these."
So basically, it can take a beating, but it's not indestructible.
It's the only toy i've found that can comfortably used for double penetration(by the same toy that is). Since it can be shaped to suit the individual, you can customize it to your own comfort level, this is particularly useful for those ladies who have conditions such as pitched cervix or a prolapsed uterus.
The genius of The Flow's design lies in it's simplicity. The bullet can be used in the twists of the toy or separately, the bullet has one moderately powerful speed, but the vibrations travel throughout the toy very well. The ability to shape it to fit your needs make The Flow stand apart from all the other toys on the market. Since there is no "base" to the toy, if using it for anal, use caution!
The Flow cleans up rather easily. I gently untwist it so i can run a soapy was cloth over all the surfaces and rinse well, it can be boiled for 3 min (without the bullet) run through the top rack of the dishwasher or wiped down with toy cleanser/cloths.
The bullet can be cleaned with a damp cloth or toy wipe, but shouldn't be cleaned or stored with the battery in. It can be stored in the box it comes with, but investing in a toy pouch wouldn't be a bad idea since it's a bit of a lint magnet.
The Flow comes in a gray box, which isn't great for storage, but does show several different shapes you can bend the flow into.