hot snack or a comforting bowl of soup

What does the '8mm' in the product description refer to

Features a distinctive dragon face design symbolizing strength and mystique

or other delicate items

Stainless Steel Vacuum Water Bottle – Leak-Proof 350ml Flask Bulk_2 hot snack or a comfortingExperience the convenience of the Stainless Steel Vacuum Water Bottle with 350ml capacity, designed to keep your beverages hot or cold on the go. This vacuum insulated travel bottle is perfect for everyday use, ensuring your drinks stay at the ideal temperature for hours. Key features 350ml capacity suitable for personal hydration needs Durable stainless steel body with rust resistant finish Double wall vacuum insulation maintains temperature for