Prostate massagers are curved to reach the prostate, a small gland about two inches in that a straight toy will press straight past. Vibrating curved plugs built for the angle, with a flared base or handle on every one.
A prostate massager is a toy shaped to reach the prostate, a walnut sized gland sitting about two inches inside the rectum toward the front of the body. Also called the P-spot. The shape is the entire product: short, with a forward bend near the tip, because a straight toy slides past the gland instead of pressing on it.
What people are after is a different kind of orgasm rather than a stronger version of the usual one. It tends to build more slowly, spread further through the body and last longer, and it can happen without any external stimulation at all. Some describe it as deeper and more full body. Reactions are split, and plenty of people find it interesting rather than transformative.
The thing worth knowing before you decide it did not work: if a prostate toy seems to do nothing, the problem is almost always the angle rather than the size. The gland is small and the approach is specific, so shifting position, tilting the toy, or trying it while already aroused changes the result more than buying a bigger one will. It also frequently takes several attempts, which is normal and not a sign anything is wrong.
Sorted by what the toy does beyond the curve.
If you have never tried anal at all: start with a small plain plug, not a curved one. Comfort first, aim second. Trying to learn both at once usually ends with the conclusion that neither works. The butt plugs page is the right first stop.
If you are choosing between shapes: the curve matters more than anything else on the box. Short with a pronounced forward bend is what reaches the gland. Length is close to irrelevant and can work against you.
If you want it hands free: vibrating, with a base that sits flat. The whole appeal of a shaped plug is that it stays in position and applies pressure without you holding it there.
If the first attempt did nothing: change the angle, not the toy. Try it lying on your side with knees drawn up, try it once already aroused rather than cold, and give it more than one session before deciding.
On warm up: do not go straight for it. Everything here works better after the surrounding muscle has relaxed, and rushing this part is what makes people call the whole category uncomfortable.
On lube: far more than you think, water based with silicone. The rectum makes none of its own, and a curved toy that has to find a specific angle needs to be able to move to do it. See anal lubricants.
