jawonbongsajaneun jawonbongsa jokkireul ipgo gomujanggabeul kkipnida.

-는 is the topic particle. In this sentence, 자원봉사자는 means something like as for the volunteer or volunteers (in general).

It often gives a sense of:

• introducing the topic
• making a general statement
• sometimes adding contrast, depending on context

Here, it sounds like a general description of what a volunteer wears.

If you used -가 instead (자원봉사자가), it would feel more like you are specifically identifying the subject rather than setting up a general topic.

It can be understood as a volunteer or volunteers in general, depending on context.

Korean usually does not force you to mark:

• singular vs. plural
• a/the the way English does.

So 자원봉사자는 can naturally mean:

• A volunteer wears...
• Volunteers wear...

If the speaker really wanted to emphasize plural, they could say 자원봉사자들은, but that is often unnecessary.

The first 자원봉사자 means volunteer.

The second 자원봉사 is modifying 조끼 and means something like:

• volunteer vest
• vest for volunteer work
• volunteer uniform vest

Korean often uses noun + noun combinations like this. So instead of adding extra words like English sometimes does, Korean can simply put nouns together:

• 자원봉사 조끼 = volunteer vest
• literally something like volunteer-service vest

So the repetition is not strange in Korean.

Because Korean very often uses noun + noun compounds without 의.

So:

• 자원봉사 조끼 = volunteer vest
• not necessarily the volunteer’s vest
• more like a vest related to volunteering

If you said 자원봉사의 조끼, that would sound unnatural here.

In Korean, 의 is much less common than English of or apostrophe-s in many everyday expressions.

입고 is the -고 connective form of 입다 (to wear, for clothes).

So:

• 입다 = to wear
• 입고 = wearing ... and / wear ... and then ...

In this sentence, 조끼를 입고 고무장갑을 낍니다 connects two actions:

1. wearing the vest
2. putting on the rubber gloves

A useful point: in Korean, when verbs are linked with -고, the final verb usually carries the tense and politeness for the whole sentence.

Usually -고 just links the actions as and.

In this sentence, it can imply a natural order:

• first put on the vest
• then put on the gloves

But its main job is simply to connect the two actions. It does not strongly emphasize sequence the way English and then does.

If the speaker wanted to stress order more clearly, other expressions could be used.

Because Korean uses different verbs for different kinds of things you “wear.”

Here:

• 입다 = wear clothes like shirts, coats, dresses, vests
• 끼다 = put on/wear things like gloves or rings

So:

• 조끼를 입다 = wear a vest
• 장갑을 끼다 = put on/wear gloves

This is very important for learners, because English uses wear for many things, but Korean splits that meaning across several verbs.

Some other common ones:

• 신다 = wear shoes
• 쓰다 = wear a hat / glasses
• 차다 = wear a watch / bracelet / belt
• 메다 = wear something over the shoulder, like a backpack

Because both are direct objects of their verbs.

• 조끼를 입고 → wear the vest
• 고무장갑을 낍니다 → put on the rubber gloves

The particles are:

• -를 after a vowel
• -을 after a consonant

So:

• 조끼 ends in a vowel sound → 조끼를
• 고무장갑 ends in a consonant sound → 고무장갑을

That is normal Korean sentence structure.

When verbs are connected with -고, the earlier verb usually appears in a connecting form, and the last verb carries the tense and politeness.

So:

• 입고 = connect the first action
• 낍니다 = final verb, showing present tense + formal polite style

This means the whole sentence is formal, even though only the last verb has -ㅂ니다.

If you made both fully finite, it would sound unnatural:

• 조끼를 입습니다 그리고 고무장갑을 낍니다
  This is possible in some contexts, but much less smooth than the original.

낍니다 is the formal polite present form of 끼다.

This is the -ㅂ니다 / -습니다 style, often used in:

• formal writing
• instructions
• announcements
• news-style descriptions
• polite public information

So the sentence sounds neat, official, or textbook-like.

If you made it less formal, you might get:

• 자원봉사자는 자원봉사 조끼를 입고 고무장갑을 껴요.

Korean often leaves number unmarked when it is obvious from context.

So 고무장갑을 낍니다 can naturally mean:

• put on rubber gloves
• put on a pair of rubber gloves

Korean does not always add a plural marker like English does.

You could add 들 in some situations, but here it would usually be unnecessary and less natural:

• 고무장갑들을 is possible in some special contexts, but not the normal choice here.

It is another noun + noun combination:

• 고무 = rubber
• 장갑 = gloves

So 고무장갑 means rubber gloves.

This is very common in Korean:

• 운동화 = athletic shoes / sneakers
• 비닐봉지 = plastic bag
• 손목시계 = wristwatch

Korean often builds vocabulary by combining nouns like this instead of using separate adjective forms the way English sometimes does.