Tilam angin kau terlalu besar.

In Malay, possessive words often come after the noun.

So:

• tilam angin kau = your air mattress
• literally: air mattress your

This is a very normal Malay pattern:

• rumah saya = my house
• kereta dia = his/her car
• buku mereka = their book/books

So even though English says your air mattress, Malay naturally says air mattress your.

Yes, literally:

• tilam = mattress
• angin = wind / air

But together, tilam angin means an air mattress or inflatable mattress.

This is a fixed, natural expression in Malay. Even though angin often means wind, in this phrase it refers to something filled with air.

Malay often leaves out the verb to be in simple sentences like this.

So:

• Tilam angin kau terlalu besar.
• literally: Your air mattress too big.

But in natural English, we translate it as:

• Your air mattress is too big.

This is very common in Malay when describing something:

• Rumah itu besar. = That house is big.
• Dia cantik. = She is beautiful.
• Mereka sibuk. = They are busy.

So the missing is is completely normal.

Terlalu besar means too big, not just very big.

• terlalu = too / excessively
• besar = big

So terlalu besar suggests that the size is more than wanted, needed, or suitable.

Compare:

• sangat besar = very big
• besar sekali = very big / really big
• terlalu besar = too big

This is an important difference. If you use terlalu, it usually implies a problem or excess.

Kau is informal. It is common in casual speech, but it can sound too direct if used with the wrong person.

Use kau with:

• close friends
• people your age in casual settings
• very informal conversation

Be careful using it with:

• strangers
• older people
• teachers
• bosses
• formal situations

More polite alternatives include:

• tilam angin awak terlalu besar
• tilam angin kamu terlalu besar
• tilam angin anda terlalu besar (more formal)

So the sentence sounds casual and conversational because of kau.

Yes, you may hear kau punya tilam angin, but it is less standard and more colloquial.

Compare:

• tilam angin kau = your air mattress
• kau punya tilam angin = your air mattress

The more standard and straightforward form is tilam angin kau.

The punya structure is common in speech in some regions and styles, but learners are usually better off learning the simpler pattern first:

• noun + possessor
• tilam angin kau
• buku saya
• rumah dia

Because besar is the description of the subject, and in Malay this kind of predicate usually comes after the noun phrase.

Structure here:

• Tilam angin kau = subject = your air mattress
• terlalu besar = predicate = too big

So the sentence is basically:

• Your air mattress
  • too big

This is a normal Malay sentence pattern.

Yes. That is perfectly correct.

The main difference is tone:

• kau = informal, casual
• kamu = less rough, often more neutral
• awak = common polite spoken form in many contexts
• anda = formal, often used in writing, announcements, advertising

So these are all possible depending on context:

• Tilam angin kau terlalu besar.
• Tilam angin kamu terlalu besar.
• Tilam angin awak terlalu besar.
• Tilam angin anda terlalu besar.

They all mean roughly the same thing, but the level of formality changes.

It is natural, but it sounds more like spoken, casual Malay because of kau.

The grammar itself is normal:

• noun phrase + description
• no is
• possession after the noun

What makes it feel casual is mainly the pronoun choice. In everyday conversation, this kind of sentence is very natural.

A more neutral or polite version would be:

• Tilam angin awak terlalu besar.
• Tilam angin anda terlalu besar.

Yes. Besar covers both big and large in most everyday contexts.

So depending on the English translation, it could be:

• Your air mattress is too big.
• Your air mattress is too large.

English may choose one or the other depending on style, but Malay simply uses besar.

Yes, but the effect is different.

1. Kau punya tilam angin terlalu besar

This is understandable and common in some spoken varieties, but it is more colloquial than tilam angin kau terlalu besar.

2. Terlalu besar tilam angin kau

This puts emphasis on too big first. It is possible, but less neutral. It sounds more marked or dramatic, like:

• Too big, your air mattress is.

So the most neutral everyday order is:

• Tilam angin kau terlalu besar.

You can make it more formal by changing kau and sometimes softening terlalu.

More formal:

• Tilam angin anda terlalu besar.

More polite in conversation:

• Tilam angin awak terlalu besar.

Softer wording:

If you want to sound less blunt, you could say something like:

• Tilam angin awak agak besar. = Your air mattress is rather big.
• Tilam angin awak macam terlalu besar. = Your air mattress seems a bit too big.

So the original sentence is clear and natural, but it is quite direct and casual.