The O2 Mark by Tantus is a multi-purpose dildo. It can be used for vaginal or anal penetration, is also useful for practicing oral sex, and can be shared with a partner. However, you should be sure to sterilize it completely before and after sharing it, and after using it for anal.

While I use this toy for solo play, it can also be used with a partner. Since Mark has a flared base, it is o-ring harness compatible. And while it could be used as a packer, I don't recommend it for use in public, since Mark is a lot stiffer than most packing dildos and would make it look like you had a giant boner.

Mark is made out of dual-density silicone, meaning it has a hard inner core and a softer outer layer, to make it feel more life-like. The inner core is bigger than I thought it'd be, making it more firm and slightly less flexible than I expected. The head is all squish, though, making it so that it won't be feeling like it's poking you too hard during prolonged thrusting. Also, it's just fun to squeeze.

The protruding veins along Mark's shaft provide some texture, but it's hard to feel when in use since the outer layer is so soft. So, for those who love a lot of texture, this will be a let down. But for people (like me) that find a lot of texture to be irritating, this will work fantastically.

Mark is designed to look like the average human penis. It is five and a half inches long, insertable, and just under one and a half inches in diameter. I personally love the size and feel like it would please most users, but those who prefer big toys and beginners who aren't used to using any kinds of toys might take issue with it.

There is also a slight curve to the shaft, which stimulated my G-spot surprisingly well. While it might not do much for those without sensitive G-spots, it really hit the spot for me.

This toy's performance is great, and it does exactly what it's designed for. It is only marred by one thing: there is so much drag, it's ridiculous. I have to use a lot of lube and find myself reapplying more often than usual. So be sure to keep yourself very lubricated when using Mark, especially for anal!

Since this toy is made of silicone, it can be cleaned in any number of ways: bleaching it, boiling it, putting it in the dishwasher, using toy cleaner, or good old-fashioned soap and water. However, since Mark is a major lint-magnet, it's best to let it air dry than try to dry it off with anything, and wash it before each use to make sure it's free of any debris.

Mark can be stored either in its package (although it is slightly bulky) or in a ziplock bag. Do not store Mark with other silicone toys or use with silicone lubes, or else the silicone will start to break down and become tacky. You should only use water-based lubes with this toy.

Mark comes in a clear package with a plastic clamshell container inside to hold the dildo. The name of the toy isn't on the package anywhere, but there is a bit of information on how to clean it, which is very helpful.

When I received my Mark, I noticed that it had a bunch of strange looking spots around the base of the shaft, as if someone had left it rubbing against another silicone toy or had gotten drops of silicone lube on it, and it had started to break-down in those spots. There are several small ones, but here's a picture of the biggest one:



I was disappointed that a toy that should be of such high quality came to me already having these flaws. Thankfully, I bought it on sale for 25%-off, otherwise I would've been very, very unhappy.

And as a side note: I was aiming to have this dildo match the color of my skin as closely as possible, and, while the caramel is actually a little bit too dark, it's close enough for me. However, those who have darker skin and want a dildo that matches (or anyone who just wants a darker-skin-toned dildo) don't have an option. I wish Tantus produced Mark in "chocolate", if we're going to follow the food comparison theme.