Thank you for viewing! This vacuum-insulated stainless steel mug is durable and perfect for outdoor use. There are a few black marks on the bottom. See photos 4 and 5. Otherwise, there are no noticeable flaws. Please refer to the photos for the size. I purchased this but it has been stored in the cupboard without being used. I am selling it to organize things due to a move. Thank you for your understanding. ☆ Instant purchase OK ☆ Please check the photos carefully before purchasing. - Material: Stainless steel - Insulation Type: Vacuum insulation - Model Number: UE-3499 - Brand: Captain Stag