Can holders, like these neoprene foam sleeves, are an easy and inexpensive way to keep your beer or soda cans cool for longer periods. Reusable and personalized, they insulate your drink, counteract condensation build-up, and keep your hands dry. Try them on bottles, too! There are four methods of customization for the "Happy Birthday" design. First is color selection. Next, there is the photo upload. Select a high-quality photo, image, or picture with a .PNG or .JPEG file extension. An image with the appropriate resolution will produce a sharper printed result instead of blurry imagery. After you add your photo, it will appear in the preview window, where you can make the final touches to its sizing and placement. The custom photo print option also includes editable text parameters. On the photo side, you can leave the text fields blank or use them to add the year. On the reverse side, you add extra details like a name or last name. They're a fun party accessory. For an event like a birthday, graduation, anniversary, bar/bat mitzvah, or reunion, they can be a cheap favor giveaway for guests. It can also be a gift for the birthday boy or girl, graduate, or anniversary couple.