These sleeves truly are universal. They can be used by a man as a masturbator, by a woman on a small toy to add girth and texture, and on a man to add girth and texture to his penis during sex. If you wanted to get really creative you could get an 11" long tube and put one on each end for massage purposes.

They're very stretchy so girth won't be a problem and if you happen to be putting them on something that's longer than they are, they just don't cover the whole thing.

These sleeves are made from TPR, and are phthalates free, latex free, and hypoallergenic.

There's no real smell, at least not an offputting one. There's somewhat of a sweet smell that I can't quite put my finger on, but it's really only noticeable if you have the sleeve right to your face. The material is really stretchy as well. Like, I can fit my entire hand inside of both sleeves with no problem and in a fist my hand measures about 9" around.

Both sleeves are textured inside and out.

There's enough of a drag to the material that if it's laying down and you touch the tip with your fingertip you can start to pick either sleeve up.

These sleeves are also lint, dirt, dust, and other particle magnets, so keep that in mind.

At first when playing around with the sleeves and stretching them out, I was afraid I might start a tear at the bottom of one, but as my fiance and I played around a bit more, I became more confident in their ability to withstand some abuse.

Each sleeve is about 5" deep, and can stretch all the way up to 10". They have an unstretched diameter of 1 1/8" and a max diameter of somewhere around 3". You could easily put one on a soda can if you so desired. The design of the sleeves is to add texture and therefore sensation to both the wearer and receiver. Both sleeves can be worn with either textured side out.

Both sleeves are textured on the inside with small nubs that stop at the head of the toy, leaving a 1/2" tall smooth tip on each sleeve. Sleeve 1 is covered from the base of the sleeve to 1/2" below the very tip of the sleeve with 1/4" long 'arms' that are made of the same TPR as the rest of the sleeve. Sleeve 2 is covered from the base of the toy to 1/2" below the very tip of the toy in 1/16" tall 'arms' that somewhat resemble nipples, and are also made of the same TPR.

The inside texture and the stretchiness of the sleeves make them a bit more difficult to get on. I have found that the best way almost requires you to have 3 hands, one to pinch the tip to keep air from getting trapped inside, and 2 to hold the sleeve open while you insert whatever you're trying to texture. If putting on a toy, air being trapped in the head isn't a big deal, but you'll want to treat it like a condom if you're using during sex.

The white ones glow in the dark. And just about everywhere else too. They glow very easily which is nice because you won't have to hold a sleeve over a light source for 20 minutes to get that novelty factor, and the glow lasts as long as you do.

Once on both sleeves are tight enough to be noticeable but not so tight as to be unpleasant or uncomfortable. Shorter men and toys will have a problem with the length unless the base is rolled up so the rest of the sleeve fits, but I've found that the roll at the bottom gets in the way and becomes very uncomfortable for the person on the receiving end. These sleeves will work best for longer penises and toys.

A lot of women might find that these sleeves will make their partner's penises uncomfortably large during sex, but add a nice girth to slimline vibrators and other slim toys while the texture is enough to stimulate the g-spot.

These are fairly simple to care for. When done, you can either wash with warm soap and water, or spray down with your favorite toy cleaner. Because of the extreme amount of texture, I recommend the soap and water, making sure to clean both the inside and out. Once you've done your last rinse, it's best to let them air dry, then replace the little tube that came inside each sleeve, and return to storage.

You can safely use either a water based or silicone based lube with these sleeves.

Make sure to store them in something as the material makes them want to pick up every speck of anything known to man. I recommend the original packaging just because it's custom made for these sleeves. I also recommend storing these by themselves away from other toys (including each other) because the material can be melted by other toys.

I'd call the packaging not really discreet in the least bit. It's made of clear plastic with two sections, one for each sleeve. Inside of each sleeve is a little plastic tube to help hold the shape of each sleeve to prevent either from folding over on itself which could lead to the toy melting.

The little insert at the top of the flip out packaging on the front tells you that they glow in the dark, offer enhancement for him, and fit standard vibrators, as well as being phthalates free. The back just says "glow in the dark universal sleeves" and "soft, stretchy, textured sleeves."

There were no real instructions, but it's not exactly hard to figure out.

You should never use this product anally, and there are a few reasons why. First and foremost, you can't sterilize this toy and it's porous, so it will hold bacteria. So unless you only planned on using it once and tossing it, there's no point. Also, I don't care how well you think it's on whatever you have it on, it can always find a way to come off, and you really don't want to have to ask a doctor to fish this out for you.

Don't use this with a condom, it basically acts as one itself, and using it with one will most likely just cause the condom to break. Also using this as a condom will not prevent STDs.

Make sure to use plenty of lube no matter if you're using this alone or with a partner.

For me, and for my fiance, these are best left as solo toys. They do wonderful things for my vibrators, and he enjoys using them on his own as well. According to him, as a masturbator they feel best when flipped 'inside out'. However when all lubed up and being used as a masturbator, you sometimes end up with some noise. Nothing too bad, but noticeable to the user at least.

When we tried them during sex, they weren't all that hard to get on, and lubing up wasn't a problem, but on his penis, which is thicker than my vibrator, the sleeves became uncomfortably girthy. He's of average thickness and I believe about 6" in length. There was plenty of room at the head and that made it awkward to insert vaginally, and when we scooted that down farther and folded the bottom over, it wouldn't stay in place and the last 2" of his penis became unusable because of how much the sleeve had bunched.

The glow was really neat. It's so powerful that you can see the sleeves glowing even while the lights are on. It definitely added a cool element to the sex.

Individually, we each enjoy these sleeves a lot. Together, we'll stick with textured condoms.