The O2 Revolution is a larger dildo. It is definitely filling but nice and squishy so it feels amazing! You could use it anally but it is fairly large. It can be used solo or with a harness. (My review will focus on solo use)

When I first opened the box I was kind of surprised by it's size. I knew it would be big but the head is really big!

It has very minimal smell and tastes a little plastic-y but it isn't enough to be a turn off.
The inner silicone core (the DARK blue, pink, purple as seen in the photos)is hard and it has a layer of soft squishy silicone over it. The core does not go all the way to the head so the head is nice and squishy. Very close to the real thing as far as the head goes. I felt the shaft wasn't as stiff as a real penis. It wobbles if you shake it.

It is not very sticky, but it isn't smooth feeling. So unless you have it lubed it isn't easy to stroke it or insert it.

The ripples are by far my FAVORITE part! I previously owned a dildo with ripples and my husband would thrust it in a way that would send me off the wall. We got rid of the old dildo, for some reason, and I was excited to get this one because of the ripples. They feel GREAT, especially if you twist it while thrusting! I can't wait to use it with my husband!
It is made of 100% premium silicone so it is non-toxic, hypoallergenic, and phthalates-free. It's also very easy to sanitize.

At 7 1/2" long and 5 1/2" around this dildo is fairly large. The shaft wasn't too big for me but the size of the head is what gave me pause. When I used it I could feel the ridge of the head which was nice because it wasn't too stiff. The base is nice to hold on to while thrusting. I wouldn't recommended this dildo for beginners just because of it's size however I do recommend silicone dildos for beginners because they are easy to care for.

The O2 Revolution isn't totally realistic because of the colors and ripples, also the large size of the head was abnormal.

I wouldn't consider this to be discreet. It is fairly large.

I like pretty much everything about this dildo. The only things that may be slightly annoying is that it easily attracts lint and hair and that it does not stand up on it's own. I like to be able to stand my dildos upright for them to air dry. This one falls over because the size of the head.

The ridges/ripples are by far my favorite part of the O2 Revolution. I also really like the ridge of the head, it feels really good to pop the head in and out. It does not have a suction cup but the base is wide enough to hold on to.

This toy is amazingly easy to care for. That is one of the many reasons I don't mind spending the extra money to get silicone. To clean you can wash with hot water and soap or even boil it! You can also put it in the top rack of your dishwasher. It's also bleachable.

You can not use silicone based lubes with the O2 Revolution, so water-based lubes only!

I recommend you store this in a toy bag because it will collect lint and hair if left out. It is easy to clean off if it does get linty.

I barely looked at the box before ripping into it to get to the dildo inside so I am taking a moment to check it out to write this review. My packaging is different than the photo shows. My O2 Revolution came in a clear and red box. On the front it says 100% ultra-premium platinum silicone. On the side and back it talks about 100% silicone being safe and it states that all Tantus toys are handmade.

There were no instructions for use but I imagine this would be pretty easy to figure out. They do give instruction on how to clean and sanitize.

I absolutely love this dildo. I expect to have this in my toy drawer for a long long time. It is great quality and you can tell. I primarily bought this dildo because of the ridges/ripples and they were as great, if not better, than I thought they'd be! The size wasn't too much of an issue for me, I found it nice and filling. The head was large and squishy. I sat and held and squished this dildo for about a half an hour before I even used it. I loved the ridge on the head. It felt really good to pop the head in and out. Cleaning was amazingly easy! I used hot water and antibacterial soap. I loved that it was not too sticky which is a problem I have had with other dildos.