2021 Popular 24oz Plastic Double Wall Insulated Crystal Grid Studded Tumbler Cups Stud Mug with Straw 1) Bubble bag + egg crate The most economical way for both packing cost and customers' shipping cost. 2) Opp bag + white box A very popular way for customers who sells on line and need to be shipped by their national express. 3) Opp bag + colored box Usually used for customers who have higher requirements on their marketing plan or new brand building.