אני מקווה שתמצאי סוודר נוח שלא יהיה מצמר, כי צמר לפעמים לא נעים לי.

Because שתמצאי is the future, 2nd person feminine singular form of למצוא (to find).

The sentence is speaking to one female person, so Hebrew uses the feminine singular form:

• שתמצא = that you (masculine singular) will find
• שתמצאי = that you (feminine singular) will find

So:

• אני מקווה שתמצאי... = I hope that you will find... (said to a woman/girl)

If you were speaking to a man, it would be:

• אני מקווה שתמצא...

Here ש־ means that.

So:

• אני מקווה = I hope
• שתמצאי = that you will find

Together:

• אני מקווה שתמצאי... = I hope that you will find...

This ש־ is extremely common in Hebrew. It often introduces a subordinate clause, just like that in English.

For example:

• אני יודע שהוא כאן = I know that he is here
• אני חושבת שזה טוב = I think that it is good

Because סוודר (sweater) is a masculine noun, so the adjective must also be masculine.

• נוח = comfortable (masculine singular)
• נוחה = comfortable (feminine singular)

So:

• סוודר נוח = a comfortable sweater
• חולצה נוחה = a comfortable shirt/blouse

In Hebrew, adjectives usually agree with the noun in gender and number.

Because the thing being described is סוודר, and סוודר is masculine singular.

• יהיה = will be (masculine singular)
• תהיה = will be (feminine singular)

So:

• סוודר שלא יהיה מצמר = a sweater that will not be made of wool / that is not wool

Even though English often uses it will be, Hebrew still makes the verb agree with the noun’s gender:

• הסוודר יהיה... = the sweater will be...
• החולצה תהיה... = the shirt will be...

מצמר means from wool or made of wool.

It is made of:

• מ־ = from / of / made of
• צמר = wool

So:

• מצמר = from wool, of wool, or more naturally in English, made of wool

In clothing descriptions, Hebrew often uses מ־ where English uses made of:

• חולצה מכותנה = a shirt made of cotton
• שולחן מעץ = a table made of wood
• סוודר מצמר = a sweater made of wool

Because שלא יהיה מצמר is a fuller relative clause meaning something like:

• that won’t be made of wool
• that isn’t made of wool

It modifies סוודר נוח:

• I hope you find a comfortable sweater that is not made of wool

Hebrew often uses this kind of structure:

• noun + שלא יהיה / שלא תהיה / שלא יהיו...

A shorter phrase like סוודר לא מצמר might sometimes be understandable, but it sounds less natural in a sentence like this. The clause with שלא יהיה is clearer and more idiomatic.

שלא is made of:

• ש־ = that
• לא = not

So here it means:

• that ... not
• more naturally: that won’t / that isn’t

In this sentence:

• שלא יהיה מצמר = that won’t be made of wool / that isn’t wool

This is a very common Hebrew combination.

For example:

• אני רוצה ספר שלא יהיה ארוך מדי = I want a book that won’t be too long
• מצאתי מקום שלא יקר = I found a place that isn’t expensive

Hebrew often repeats a noun where English might vary the wording.

Here:

• שלא יהיה מצמר = that it not be made of wool
• כי צמר לפעמים לא נעים לי = because wool is sometimes unpleasant for me

So צמר appears once as the material of the sweater, and then again as the general topic: wool.

This repetition is completely natural in Hebrew. English might sometimes avoid repeating the word, but Hebrew usually does not mind it.

Literally, לא נעים לי is something like:

• not pleasant to me
• it is not pleasant for me

Here:

• נעים = pleasant / comfortable / agreeable
• לי = to me / for me

So:

• צמר לפעמים לא נעים לי = Wool is sometimes not pleasant for me
• more natural English: Wool is sometimes uncomfortable for me or Wool sometimes doesn’t feel good to me

The לי is important because Hebrew often expresses sensations with a structure like X is pleasant/unpleasant to me.

Compare:

• נעים לי = it’s pleasant for me / I feel comfortable
• לא נעים לי = it’s unpleasant for me / I feel uncomfortable

It can mean both, depending on context.

In this sentence, it appears twice with slightly different shades of meaning:

• סוודר נוח = a comfortable sweater
  Here Hebrew uses נוח, not נעים, because נוח is the more direct word for physical comfort.

• צמר לפעמים לא נעים לי = wool is sometimes unpleasant / uncomfortable for me
  Here נעים describes how wool feels to the speaker.

So the two words are related but not identical:

• נוח = comfortable, convenient
• נעים = pleasant, agreeable, nice-feeling

In everyday Hebrew, לא נעים לי is also a very common expression that can mean emotional discomfort too, not just physical discomfort.

Yes, לפעמים (sometimes) is flexible in Hebrew.

The sentence has:

• כי צמר לפעמים לא נעים לי

But these are also possible:

• כי לפעמים צמר לא נעים לי
• כי צמר לא נעים לי לפעמים

All of these can work, though the exact emphasis changes a little.

The version in the sentence sounds natural and puts צמר first as the topic:

• because wool, sometimes, is unpleasant for me

Hebrew word order is often more flexible than English, especially with adverbs like לפעמים, אולי, כבר, תמיד, etc.

Because Hebrew often does not need a dummy subject like English it.

In English, we sometimes say:

• It is uncomfortable for me
• It feels unpleasant

In Hebrew, the structure can simply be:

• צמר לא נעים לי

Literally:

• wool not pleasant to me

The noun itself, צמר, is enough to serve as the subject/topic, so no extra it is needed.

Yes. If you were speaking to a man, only שתמצאי would change.

Current sentence:

• אני מקווה שתמצאי סוודר נוח שלא יהיה מצמר, כי צמר לפעמים לא נעים לי.

To a man:

• אני מקווה שתמצא סוודר נוח שלא יהיה מצמר, כי צמר לפעמים לא נעים לי.

Why only that part?

• שתמצאי / שתמצא agrees with you
• סוודר נוח
• שלא יהיה
• צמר לפעמים לא נעים לי all stay the same, because they are not referring to the gender of the person being addressed

Yes, very common.

אני מקווה ש... means I hope that... and is used all the time.

Examples:

• אני מקווה שתבואי = I hope that you’ll come
• אני מקווה שהוא בסדר = I hope he’s okay
• אני מקווה שלא ירד גשם = I hope it won’t rain

So this sentence follows a very normal Hebrew pattern:

• אני מקווה + ש + clause

Yes, two things stand out:

1. Gender agreement is everywhere
   English learners often notice the feminine שתמצאי, but also need to notice the masculine forms tied to סוודר:

   • סוודר נוח
   • שלא יהיה

2. Hebrew expresses sensation differently from English
   Instead of saying wool bothers me or wool feels uncomfortable to me, Hebrew says:

   • צמר לא נעים לי literally, wool is not pleasant to me

That structure is very natural Hebrew, even if it feels unusual from an English perspective.