Learn English – name “-phobia” for fear of tape? For example duct tape, tesa film and stickers

This is called a lining:

material that lines or that is used to line especially the inner surface of something (as a garment)^(MW)

You would ask questions such as:

What are those boots lined with?

Is the lining removable?

Do you have any gloves with fur lining?

They are called reported questions with question words.

If there is a question with a question word in Direct Speech, (what, where, why, who, when, how) use this question word in Reported Speech. Again there is no auxiliary verb and the word order is like an affirmative sentence

• Peter: “What time did the train leave?”
• Peter asked me what time the train had left.