The Mycero set consists of one red and one green silicone finger massager. This set is not necessarily for someone who wants a full-on O-face kind of toy. The finger massagers are more teasers meant for foreplay especially since the vibrations are kind of mild. That being said, the massagers work well for nipple stimulation and work for foreplay as clitoral stimulators. The massagers won't get you off, but they'll get you ready to get off. Plus, the set is aesthetically pleasing as well. Finally, you can pop out the bullet, warm or cool the silicone, and then pop the bullet back in for some temperature play excitement.

Since both items in the set are identical except for color, I'm going to write as if there is one finger massager from this point...
The massager has a silicone sleeve, but the bullet is plastic. The bullet can be removed, leaving the silicone sleeve with the ability to be sterilized. Silicone is a 10/10 on the EF safety scale, is hypoallergenic, is phthalates free, and it is non porous. All of this means no irritation, and once the sleeve is sterilized, the item can be used by a partner. Silicone has no smell nor taste, which is fantastic for those who can't stand the "chemical" smell of some other materials. There really is no texture to this massager...no nubs or ribs.

From EF's product page:
Color:
Green / Red
Length:
1 1/2"
Circumference:
2"
Diameter:
5/8"
Weight:
0.1 lb

The measurements really aren't terribly important for a finger massager. The measurements really make no difference in product performance, and of course it's going to be lightweight! I did think the design looked a little space-ish. I also like the placement of the loop as opposed to my last finger massager. Here are a couple of pics:

There is one level of vibration for the finger vibe. There is a single on/off button. 2 watch batteries power the finger massager and are included. I like that the power switch isn't located where it will accidentally be turned off during use. The fact that this item is not waterproof is a little bit of a bummer, but since water-based lubricant is the only kind recommended for this item, it wouldn't be compatible for those who need lubrication and want to play in the shower or tub anyway. Finally, this item is VERY quiet, which I prefer (even though none of my neighbors' walls are near my own bedroom walls, I do have a young child).

The packaging for this toy says to use water-based lubricant and also that the item can easily be washed with mild soap and water once the bullet is removed. However, I gave one of the two finger massagers to a friend, and the sleeve survived the top rack of her dishwasher just fine. I'd also imagine that it isn't thin enough to be harmed by boiling, but I wouldn't necessarily feel comfortable using a bleach solution on the sleeve. Contrary to other silicone toys, the finger massager doesn't attract a lot of lint. I also like that it is small and can be stored in a minimal amount of space. I just store mine in a baggie. Remember not to store it next to other silicone toys without a barrier between the items.