La vendeuse me montre une veste dont la fermeture éclair monte jusqu’au col et dont les manches sont plus courtes.

La vendeuse is the feminine form of vendeur and means saleswoman or female shop assistant. French nouns often change form depending on the gender of the person being described.

• un vendeur = a male salesperson
• une vendeuse = a female salesperson

Since the sentence uses la vendeuse, the speaker is referring to a woman.

Me means to me.

So:

• La vendeuse montre une veste = The saleswoman shows a jacket
• La vendeuse me montre une veste = The saleswoman shows me a jacket

In French, indirect object pronouns like me, te, lui, nous, vous, leur usually come before the verb.

Dont is a relative pronoun. It often replaces de + noun and can mean things like:

• whose
• of which
• about which
• sometimes just a structure required after a verb or expression with de

In this sentence, dont links une veste to details about that jacket:

• une veste dont la fermeture éclair monte jusqu’au col = a jacket whose zipper goes up to the collar
• dont les manches sont plus courtes = whose sleeves are shorter

Here, dont is most naturally translated as whose.

It is repeated because the sentence gives two separate pieces of information about une veste:

1. dont la fermeture éclair monte jusqu’au col
2. dont les manches sont plus courtes

French often repeats the relative pronoun when two different clauses describe the same noun. This keeps the structure clear and natural.

You could think of it as:

• a jacket whose zipper goes up to the collar
• and whose sleeves are shorter

La fermeture éclair means zip or zipper.

Literally, it is the standard French term for the fastening device on clothing. In everyday French, people also often say un zip informally, but fermeture éclair is the full standard expression.

So:

• la fermeture éclair monte jusqu’au col
  = the zipper goes up to the collar

Literally, monte means goes up or rises, and jusqu’au col means up to the collar.

So:

• la fermeture éclair monte jusqu’au col = the zipper goes all the way up to the collar

French often uses monter in clothing descriptions to talk about something extending upward.

Because à + le contracts to au in French.

So:

• jusque à le col becomes jusqu’au col

Also, jusque is commonly written jusqu’ before a vowel sound:

• jusqu’à
• jusqu’au

This is just standard French spelling and contraction.

Because manches is a feminine plural noun.

• la manche = the sleeve
• les manches = the sleeves

Adjectives in French must agree with the noun they describe:

• masculine singular: court
• feminine singular: courte
• masculine plural: courts
• feminine plural: courtes

Since manches is feminine plural, the adjective becomes courtes.

Plus courtes means shorter.

French, like English, sometimes uses a comparative without stating the second part explicitly when the comparison is obvious from context.

So les manches sont plus courtes could mean:

• the sleeves are shorter
• the sleeves are shorter than usual
• the sleeves are shorter than on another jacket being considered

The exact comparison is understood from the situation.

French often combines details into one sentence using relative clauses, especially when describing an object carefully.

So instead of saying:

• La vendeuse me montre une veste. La fermeture éclair monte jusqu’au col. Les manches sont plus courtes.

French can package the information more smoothly:

• La vendeuse me montre une veste dont la fermeture éclair monte jusqu’au col et dont les manches sont plus courtes.

This sounds more connected and descriptive, especially in written or careful spoken French.

Grammatically, yes, but in natural English whose sounds much better.

So although dont can sometimes correspond to of which, here the most natural translations are:

• a jacket whose zipper goes up to the collar
• and whose sleeves are shorter

Using of which would sound much more formal and less natural in English.

Yes. Le col means collar.

In clothing vocabulary:

• un col = a collar
• jusqu’au col = up to the collar

So the zipper reaches all the way to the top part around the neck area of the jacket.