Ese cinturón me aprieta la cintura, y además el zapato me roza el talón.

This is a very common Spanish pattern with body parts.

Spanish often uses:

• an indirect object pronoun: me, te, le, nos, os, les
• plus the definite article: el, la, los, las

So instead of saying my waist, Spanish often says the waist and shows whose it is with me:

• me aprieta la cintura = it squeezes my waist / it’s tight around my waist
• literally: it squeezes the waist on me

This sounds much more natural in Spanish than aprieta mi cintura in most everyday contexts.

Because both actions affect me:

• Ese cinturón me aprieta la cintura = the belt is tight on me / squeezes my waist
• el zapato me roza el talón = the shoe rubs my heel

In both cases, me means the speaker is the person affected by the action.

This is extremely common with clothes, pain, body parts, and physical sensations:

• Me duele la cabeza = My head hurts
• Me duelen los pies = My feet hurt
• La camisa me aprieta el cuello = The shirt is tight around my neck

Here apretar means something like:

• to squeeze
• to press
• to be tight
• to constrict

So Ese cinturón me aprieta la cintura means the belt is too tight around the waist.

In other contexts, apretar can also mean:

• to press a button: apretar un botón
• to tighten something: apretar un tornillo

So the core idea is pressure or tightness.

Rozar means to rub against or to chafe.

In this sentence:

• el zapato me roza el talón

it means the shoe is rubbing the heel and probably causing discomfort, irritation, or even a blister.

So roza is not just light contact. In clothing/shoe contexts, it often suggests annoying friction.

Examples:

• Estos zapatos me rozan. = These shoes rub/chafe.
• La etiqueta me roza el cuello. = The label rubs my neck.

They describe two different kinds of discomfort:

• apretar = to squeeze, press, be too tight
• rozar = to rub, chafe

So:

• El cinturón me aprieta la cintura = the belt is too tight around the waist
• El zapato me roza el talón = the shoe rubs/chafes the heel

A tight belt presses. A shoe that roza creates friction.

Because with body parts, Spanish usually prefers:

• indirect object pronoun
  • definite article

So:

• me duele la cabeza
• me lavé las manos
• me roza el talón

This is more idiomatic than using possessives.

Using mi is not always wrong, but it is less natural here unless you want to emphasize ownership, contrast, or clarity.

For example:

• Me duele la cabeza = normal
• Me duele mi cabeza = unusual in everyday speech

Usually because the speaker means one specific shoe is causing the problem.

For example, maybe only the left shoe is rubbing the heel.

So:

• el zapato me roza el talón = the shoe rubs my heel

This sounds natural if one shoe is the source of the discomfort.

If both shoes were involved, you might say:

• Los zapatos me rozan los talones.

Spanish often uses the singular when one item is being talked about as the problem.

Además means:

• besides
• what’s more
• on top of that
• furthermore

So the sentence is not just listing two facts with y. It adds a sense of additional complaint:

• The belt is tight around my waist, and on top of that, the shoe rubs my heel.

It makes the second problem feel like an extra annoyance.

This is about demonstratives:

• este = this
• ese = that
• aquel = that over there

So Ese cinturón means that belt.

The choice depends on how the speaker sees the object in relation to themselves and the listener. In modern Spanish, especially in everyday speech, the distance distinction is often flexible, but the basic idea is:

• este cinturón = this belt, nearer to me
• ese cinturón = that belt, not right here with me / more associated with you or previously mentioned

Without more context, ese is just a normal way to say that belt.

The given word order is natural, but Spanish allows some flexibility.

Standard version:

• Ese cinturón me aprieta la cintura, y además el zapato me roza el talón.

You could also say:

• Ese cinturón me aprieta la cintura y, además, el zapato me roza el talón.
• Ese cinturón me aprieta la cintura; además, el zapato me roza el talón.

All of these are natural.

What matters most is keeping the pronouns and objects in a sensible place:

• me aprieta la cintura
• me roza el talón

Yes, it is grammatically understandable, but it is less idiomatic in normal Spanish.

A native speaker would usually prefer:

• Ese cinturón me aprieta la cintura

Using mi cintura is more likely when you want emphasis, contrast, or a special stylistic effect.

So for a learner, the most natural pattern to remember is:

• me + verb + definite article + body part

Yes. It comes from apretar, which is a stem-changing verb.

Infinitive:

• apretar

Present tense:

• aprieto
• aprietas
• aprieta
• apretamos
• apretáis
• aprietan

The change is e → ie in most forms.

That is why the sentence has:

• Ese cinturón me aprieta...

because the subject is ese cinturón, which is third person singular.

In Spain Spanish, z is typically pronounced like the th in think:

• roza ≈ RO-tha
• cinturón has c before i, so that sound is also like th: roughly thin-too-RON

More roughly:

• Ese cinturón me aprieta la cintura, y además el zapato me roza el talón.
• EH-seh thin-too-RON meh ah-PRYEH-tah lah thin-TOO-rah, ee ah-deh-MAHS ehl thah-PAH-toh meh RO-thah ehl tah-LON

In much of Latin America, z and soft c are pronounced like s instead.

Yes, very much so.

Spanish commonly uses this structure when clothes or footwear cause discomfort:

• La camisa me aprieta
• Los pantalones me aprietan la cintura
• Estos zapatos me rozan
• El calcetín me molesta

So this sentence sounds like a very normal complaint about wearing uncomfortable things.

It is a good model to remember for real-life situations.