3 English Phrases to Go Shopping on Black Friday in the USA

Lindsay, the English adventurer, introduces three useful phrases for shopping in English, especially during Black Friday. The phrases include 'Can I try it on?' for trying clothes, 'Do you have my size?' for checking availability, and 'What's your return policy?' for understanding return options. These phrases help non-native speakers navigate shopping experiences in the US.

What does the phrase 'Can I try it on?' mean?

What is the context in which these phrases are useful?