The SportSheets Waterproof Silicone Vibrator is a fairly standard-style vibrator which should work best for external or vaginal stimulation. Since this toy lacks any kind of flared base, it's unsafe to use for anal penetration. The slightly bulbous head can make this a good toy for G-spot stimulation, depending on where yours is located.

Since it's waterproof, it should be great for use in the shower! I personally found this toy a little awkward to use in the shower, but I don't think it was due to any failing of the toy.
If you're looking for a very discreet vibrator, this isn't a great choice for you: the shape of the toy is unambiguous about what it is and it's pretty loud if you're not in the shower.

This insertable portion of this toy is made of smooth, firm blue silicone. It's non-porous and body-safe, but should not be used with silicone-base lubricants as they will slowly dissolve it leaving it sticky and ruined. There is a visible seam on the insertable portion, but I couldn't feel it while thrusting. The shaft is rigid with a smooth satin finish that can cause some drag, so I would recommend using a water-based lube if you're inserting this.

One issue here for use in the shower is that you're definitely going to want to use lube, but it's likely to wash away in the shower. You can try angling the shower head away, but you're likely to have issues with the lube washing away anyway.

The handle is made of solid white plastic with a glossy finish along with a metallic silver finished plastic ring between the base and the shaft of the toy. The plastic is also odorless and body-safe.

This toy is 8.5" long in total with an insertable length of 4.5" and it's 1.5" thick at its widest point. The insertable shaft bulges near the end, tapering gradually down to a narrower width. It's a good shape and size for a beginner who'd like to start off simply or for anyone else who would prefer a simple and moderately sized insertable vibe. Again, this isn't a good toy for anal stimulation as it has no flared base and has the potential to get "sucked in" making it unsafe for that sort of play. The controls are simple, with a power button and a button to switch between functions.

This is a good toy for vaginal penetration and thrusting, stimulating the clit or nipples and for other external stimulation or teasing. (In a less erotic context, I also found it handy for sore shoulders.)

The design is very pretty in a simplistic way that's reminescent of some of Lelo's toy designs, although it's a bit less solid and polished overall. It's still a very pretty vibe - I like my toys to look good!
There's pretty much nothing that it looks like other than a vibrator so it's not very discreet.

The battery compartment is sealed with a thick O-ring. To switch the batteries you'll need to unscrew the toy and remove a plastic cap. If you don't get it all reassembled perfectly once you've put new batteries in, it'll make an incredible racket until you've rearranged things - this can be pretty frustrating until you've worked it out and I feel like they could've made the design for the battery compartment simpler.

Once turned on, the function button will cycle through ten different vibration patterns:

1. Strong, steady vibrations
2. Medium, steady vibrations
3. Low, steady vibrations
4. Rumbling, low-to-medium vibrations
5. Medium speed pulsating vibrations
6. Fast speed pulsating vibrations, going from low to high
7. High, fast pulsating vibrations
8. "Rollercoaster" pattern vibrations, going from low to high
9. Long, strong, steady vibrations followed by low pulses
10. Low-strength pulsating vibrations, rumbly

The vibrations overall are decently strong, but not remarkably so; if you need stronger vibrations you may want to look for a different toy. I personally didn't find it strong enough for clitoral use.

The toy seems to be completely waterproof. Checking the battery compartment after several times of shower use it was always dry and testing it by submerging it in water it was also dry. Improperly reassembling the toy after changing the batteries might change this, but it's almost unusable then anyway due to the noises it'll make, so that probably won't be an issue. It also doesn't seem to drain batteries very quickly; using it regularly for a few weeks I haven't needed to change the batteries.

Silicone is nonporous, safe and easy to clean. You can clean the toy with warm soapy water, your choice of toy cleaner or wipe it down with a 10% solution of bleach to sanitize it before washing with water.

You should be sure to double-check that no water has entered the battery compartment after use in water; I personally have never had any issues with this, but it's always good to be on the safe side.

Only use water-based lubes as silicone-based lubricants will ruin the toy.

For storage, you could keep it in the packaging or in a bag, but I wouldn't recommend leaving it out in the open as it's a pretty bad dust magnet. I've been keeping mine in the case it came in.

The packaging for this toy was very clear about what it was, but without being tacky about it: the windowed cardboard box shows the Sex in the Shower line logo with some information about the toy, but there are no people on the packaging, nude or otherwise.

The box contains a pamphlet on the rest of the Sex in the Shower line and the toy inside is in a plastic box which is useful for storage.

Overall I found this was a better toy for thrusting with a little flavor; I couldn't get off on the vibrations alone. I'd recommend it for use as a warm-up to other toys or for use with other toys rather than as a stand-alone one.