One need not go this crazy. All of these tips work great:
- A wool sock
- a beanie cap
- some bubble wrap.
From our successful Kickstarter campaign fall 2013: “I am really excited to get user feedback on how to best make long lasting nICE mugs. With a bunch of folks making nICE mugs, I am confident that people will come up with some great tips to get their nICE mugs to last a long time.”
