Yawn-chan-sama 5 I was surprised that it has insulation inside, which not only preserves the temperature of your drink but keeps condensation at bay and not wet the plush itself. It uses a velcro strap to attach Luna's head to the body, so you have to remove the head if you want to drink lol. If you're going to use this everyday, be prepared to use a relatively big bag because it's pretty bulky. Still cute though! Definitely you'll catch the eye of people when you use this in public as Luna is pretty popular.