The O2 Niagara is THE most comfortable toy I have ever had the pleasure of using. It is made by Tantus, so is 100% platinum grade silicone and body-friendly, has a flared base so it can be used in a harness(or for safe anal play), and also has a long usable length so harnesses that cut down how much shaft you can use don't get in your way. This is my dream toy, and I've wanted it ever since I set eyes on it. I got the purple base-to-white tip and it's like my own small fuckable storm cloud.

I'll say this once, but Tantus has never let me down as far as quality, so I'll say it again when I get a new, one, too.

Material: platinum grade silicone, no smell. cleans with soap and water, bleach solution or the dishwasher!
I myself keep a small bottle of toy cleaner and disposable wipes on-hand.

Safety: I like to abuse my toys, and have had no issues at all, however, if you are used to smaller toys (this is a fairly large toy in my book) you may want to warm up for a while before tackling it, and take your time.

Feel: I'm not sure about the real deal, but this thing is PLUSH and soft, but firm and has a good bit of give to it. I adore the rippled texture and the head is softer than the base. The toy is very smooth but also pretty velvety and doesn't 'stick' to skin even when somewhat dry like some silicone toys do.

Though a bit large for my taste and natural size, I worked up for this beauty. Velvet skin-like plush texture, ripples traveling down from the head, no too much texture, but the material alone is enough to melt me in my socks just by giving it a good stroke. Easy to clean, a tidbit long, but better overall for a rounded one-size fits all, as it's not too small to turn off those who like big toys, and not too large for those who need smaller toys (as long as they stretch a little before, or work up to it.) This, I'd say...is the perfect all-around non-realistic toy you can buy. It's earned a little pedestal in my pleasure chest and if I could get away with it, I'd paint it's portrait and hang that on my living room wall above the fireplace in an expensive rococo frame.

travel: good luck hiding it, it's rather large and hard to sneak anywhere
vibrations: I just use it as a dildo, but you can use or buy a stronger or multi-function bullet as you desire. The bullet it's packaged with is pretty strong, but again, it's all personal choice.

The O2 Niagara's material is amazing,
The design is very nice.
The lifespan of this toy is your lifetime, provided you take care of it, so it's a good investment
The size is on the large and long side, but nothing a little stretching can't work around.
I could live without the bullet, but hey! free bullet!
Works great in a harness!

Do use water based lubes, not silicone. I have yet to try silicone lubes on it, and never will.
Wash with bleach solution, throw it in the dishwasher, use toy cleaner wipes, or just use soap and water.

Store in a cool dry place, preferably not touching other toys. I keep mine in a puppy pile with my other tantus products, but it's not the silicone toys I watch out for. If two non-silicone toys melt onto a silicone toy, you won't want to use it, more than likely. I'm (as we speak/you read) moving said toys to a much safer and possibly more stylish spice rack. Cinnamon?...check. Rosemary?...yup. Dildos? OH YEAH. *busts through brick wall*

Meh, I tore it out of the package so fast all I saw was a semi clear blur. The way it shredded it was mostly likely flimsy plastic and not suitable for presentation, however the contents alone would upstage any wrappings unless you boxed the Niagara in precious metals and encrusted it with gemstones.

All in all, This is an expensive, larger-than-average (at least for me) toy.
However. I saved for it, and once I had it loved it immediately.
I still love it, several uses in. Normally I'm all for inexpensive toys, but this is my favorite toy, almost unseating my long-time favorite (and first dildo) the Tantus atomic small. It is worth what you pay and so much more. If you don't mind the extra length and girth, anyone could love this toy. The secret lies with the material, it feels...well...perfect! I'm sometimes guilty of just rubbing it along my jawline or giving it a bit of a boob job to feel it up. If they made this a touch smaller, I wouldn't even have been able to wright this, all my free time would be devoted to fucking myself silly with it.

I highly recommend this toy, it's unbeatable as far as lifespan, material, cleaning and maintenance.

The only issues I have are the size, which I gladly work to accommodate as best I can.
be warned! a little work is needed to enjoy the sweet sweet joy of this toy. take your time.