あんな means “that kind of,” not simply “that”

Use あんな before a noun when you and your listener can recognize the kind, look, or state you mean from something distant, previously seen, or jointly remembered. In that same distant or shared viewpoint, あんなかばん means “a bag like that,” while あのかばん identifies the particular bag. This does not mean every specific item takes あの. The exact-item series follows viewpoint: この for the speaker's side, その for the listener's side or a discourse-side referent, and あの for something distant from both people or mutually known. In everyday speech, あんな can sound admiring, surprised, critical, or dismissive. The surrounding words and situation decide the tone.

One bag, two different jobs

Two friends are looking across the street at a shop window. One points out a particular bag.

Here, あの identifies the bag both people can see in the distance. The speaker means that particular object.

The friend then responds:

Now あんな takes one visible bag as an example of a kind. The friend may buy a different bag with a similar shape, color, or feel.

That difference is the practical center of the word. English “that” can do both jobs, but Japanese usually makes you choose between identifying the noun and describing what sort of noun you mean.

Choose the viewpoint before the word

The three everyday forms describe a kind from different conversational viewpoints. こんな presents something as close to the speaker or grounded in the speaker's current example. そんな presents it as close to the listener or grounded in something the listener has just shown or said. あんな places it away from both people, or points back to something they both know.

Inside the shop, one friend holds a bag and comments on its size:

The example is physically with the speaker, so こんな is natural. The other friend can answer from the listener's stated preference:

Here, そんな picks up the size the first friend just described. In conversation, this response pattern is often more natural than reaching for あんな merely because English says “that.”

A week later, the original bag is no longer in front of them, but both friends remember it:

The shared memory gives あんな a clear reference. If the listener had no idea which experience you meant, you would first need to explain it.

When the other person lacks the reference

Jointly known is a real condition, not a detail you can skip. Imagine that one friend returns to the shop alone and asks a clerk for あんなかばん. The clerk did not see the original window display and does not share the memory, so “a bag like that” has no clear example yet.

The natural repair is to make the example available. You can show a photo, hold up a similar item, or describe the features that matter. While showing a photo on your phone, you can say:

The photo is now the speaker's present example, so こんな fits. This leads to a useful everyday test. First decide whether you are identifying one item or describing a kind. For one item, choose この for the speaker's side, その for the listener's side or a referent carried by the conversation, and あの for something distant from both people or mutually known. For a kind, keep the same viewpoint and choose こんな, そんな, or あんな. In this scene, the phone photo is the speaker's example, so こんな is natural. In the earlier shop-window scene, both friends viewed the bag at a distance, so あんな was natural for its kind.

Tone follows the scene

あんな is conversational and often carries the speaker's reaction to the kind of person, thing, or behavior being described. In the bag exchange, the reaction is positive because the speaker wants one. With a critical predicate, the same word can create emotional distance.

This is a natural warning between people who share enough context to know which manner of speaking is meant. The criticism comes from よくない and the situation. あんな helps place that behavior at a distance, but the word itself is not automatically insulting.

Spoken choice and formal choice

あんな is at home in conversation. It can sit inside a polite sentence, but it still sounds more conversational and subjective than a formal demonstrative. In formal writing, a prepared presentation, or careful customer-facing language, あのような is a less conversational option. A precise description can be better still when the listener does not share the reference.

The polite ending does not change the basic distinction. あのような商品 still describes a product of that kind within a distant or shared frame. To identify one particular product, choose この商品, その商品, or あの商品 according to viewpoint.