I miei jeans nuovi sono più comodi dei pantaloni neri.

In Italian, possessives usually go with a definite article:

• il mio libro = my book
• i miei jeans = my jeans

So i miei is the normal way to say my with a plural masculine noun.

A useful note: close family members in the singular often drop the article, for example mia sorella or mio padre, but that does not apply here.

In Italian, jeans is normally treated as a plural masculine noun. So everything around it agrees with it:

• i = plural masculine article
• miei = plural masculine possessive
• nuovi = plural masculine adjective
• sono = plural verb form

That is why you get:

• I miei jeans nuovi sono...

Even when English speakers sometimes think of a pair of jeans as one item, Italian usually treats jeans as plural.

Because the subject is plural: i miei jeans nuovi.

• è = is, for singular
• sono = are, for plural

So:

• Il mio jeans... è... would sound odd in standard Italian
• I miei jeans... sono... is correct

Both adjectives must agree with jeans, which is treated as masculine plural.

Agreement pattern:

• masculine singular: nuovo, comodo
• masculine plural: nuovi, comodi
• feminine singular: nuova, comoda
• feminine plural: nuove, comode

So since jeans is masculine plural, you need:

• jeans nuovi
• più comodi

The same thing happens with pantaloni neri: pantaloni is masculine plural, so neri must also be masculine plural.

In Italian, adjectives often come after the noun, especially when they describe a specific quality such as color, shape, or a more factual description.

So these are very natural:

• jeans nuovi = new jeans
• pantaloni neri = black trousers/pants

That said, some adjectives can go before the noun too. For example:

• i miei nuovi jeans

This is also correct, but the feel is slightly different. Putting nuovi after the noun is very straightforward and neutral.

Più means more, and comodi means comfortable.

Together:

• più comodi = more comfortable

This is the standard way to make a comparative in Italian:

• più + adjective = more + adjective

Examples:

• più grande = bigger / larger
• più facile = easier
• più comodi = more comfortable

Good question. Dei can mean some, but here that is not what it means.

In comparisons with più... di, Italian often uses di + definite article before a noun:

• più comodi dei pantaloni neri

Here, dei = di + i, meaning roughly than the black pants.

So this is a comparison structure:

• più comodi di... = more comfortable than...
• dei pantaloni neri = than the black pants

It is not the partitive some here.

Usually, with a direct comparison between nouns, Italian prefers di:

• più comodi dei pantaloni neri

Using che is possible in other comparison patterns, but in this sentence di is the normal choice.

A simple rule for learners:

• Use più... di... for straightforward comparisons like this one.

Like jeans, pantaloni is normally used in the plural when talking about trousers/pants.

• i pantaloni = the trousers / the pants

The singular pantalone exists, but it usually does not mean one ordinary pair of pants in everyday speech. So for normal clothing vocabulary, learners should use:

• i pantaloni
• i jeans

Because pantaloni is masculine plural, and the adjective must agree:

• nero = masculine singular
• neri = masculine plural
• nera = feminine singular
• nere = feminine plural

So:

• i pantaloni neri = the black pants

Yes. Both are correct:

• I miei jeans nuovi
• I miei nuovi jeans

Both mean my new jeans.

Very broadly:

• jeans nuovi sounds like a neutral description of the jeans as new
• nuovi jeans can sound a bit more closely tied as a set phrase, like new jeans

In everyday use, both are common and natural.

No. Grammatical gender in Italian is an Italian grammar feature, not something copied from English.

With loanwords like jeans, learners usually just have to learn how Italian treats the word. In standard usage, jeans is treated as masculine plural, which is why the sentence uses:

• i
• miei
• nuovi
• comodi

Yes, absolutely.

• i miei jeans = my jeans
• un paio di jeans = a pair of jeans

Both are common. Un paio di jeans emphasizes the idea of one pair, while jeans by itself is often enough in normal conversation.

For example:

• Ho comprato un paio di jeans nuovi.
• I miei jeans nuovi sono comodi.

The sentence follows this pattern:

subject + adjective + verb + comparative + comparison phrase

Broken down:

• I miei jeans nuovi = subject
• sono = verb
• più comodi = comparative adjective
• dei pantaloni neri = what they are being compared to

So the structure is:

My new jeans + are + more comfortable + than the black pants

This is a very useful model you can reuse:

• Le mie scarpe sono più leggere degli stivali.
• Il mio cappotto è più caldo della giacca.