Due to the non-stretched size, it is best for someone who is normal-sized to begin with. This will not help with small or micro-penises. Due to it only offering an additional inch in extension, you need to be able to fill the remaining area to make these work. Its simplicity makes it good for beginners, but the texture can be a little off-putting to whoever is going to be penetrated. It can be used as a masturbation sleeve, but it isn't as easy to use or clean as something intended for that purpose or to go over a vibrator. These can also make an occasional farting sound if you're using them as masturbation sleeves and aggressively pumping.

It comes packaged covered in some kind of baby powder and will need to be cleaned before use. The material itself is very soft and stretchy. One of mine came with a couple little nicks in the rubber that I thought might cause a problem when it was stretched, but the material is extremely durable. I folded it, stretched it, pulled it, and even inflated it like a balloon, and it didn't cause any problems. It is much more rubbery than a real penis - even in the 'solid' tip. There are also areas of the wall that are thinner, and they can cause some stretching or weakness. The material is prone to being scratched if dropped or rubbed against anything rough like rough tile floors or stubbly pubic hair. The rubber is very prone to attracting small particles of dirt, dust, or hair, so be careful how you carry it and make sure it gets thoroughly cleaned. The texture is smooth with a few, barely noticeable ridges to emulate an actual penis.

They look fairly penis-like when not being worn, but if you're even of average size (which you have to be to use this), the head will look strangely small and unrealistic. The walls can be a little uneven in thickness - especially close to the head. The softness of the material makes the head flop around even when you're wearing it, and it can make it hard to penetrate. This only offers a small amount of length and girth extension, and you need to be able to fit into this all of the way or it will be too floppy to be of any use as anything other than a masturbation sleeve. This can be a little difficult to get on unless you use a lube, and I wouldn't recommend trying to penetrate anything without a healthy amount of lube on the outside. I'm told this does a decent job during penetration, but I think I found it more pleasurable as the wearer. It's better for the wearer than other, harder, extenders.

While you should always wash toys before and after use, that is especially important with these. The rubber attracts dust and can get surface damage very easily from anything rough. It came packaged with baby powder, and I would recommend using it if you're going to keep this in the original, or any other, plastic bag. Since it's difficult to turn this inside out, cleaning out the inside can be tedious. Even if I'm careful, I don't think this will be a long-term product.

This came backed in a basic futurotic box with some sexy pictures depending on which color you bought. The extender itself is in a plastic bag inside the box. There aren't any instructions beyond a cursory description on the box.

I always appreciate new futuristic materials when the aid in my enjoyment, but this rubber might not be quite as useful. While it's much more durable than I expected, it isn't very appealing. It's fun to squeeze and play with, and it does feel good when you wear it, but my girlfriend was a little put off by the strange texture. The experience wasn't memorable enough for her to request it. I actually got two more (one black and one white) and converted them into penis squirt guns. I would recommend them for that purpose.

I don't have much experience with penis extensions, so I'm not sure how these rate to others. They have a length extension, so they don't allow for real ejaculation like pure girth sleeves, but the extra length is only an inch, so it doesn't really hit many more areas than I would normally. My girlfriend was less-than-wowed by the experience. It was easy to put on and take off, and I never felt like it was going to slip or fall off. The experience was pleasurable enough for me that the lack of sensitivity didn't cause me to lose my erection, but it is a different feeling. These work alright for vaginal penetration, but the softness would not make it very good for anal.