Make it a party! A set of 3 extra silicone sleeves: Mauve (Pour Decisions), Black (Night Hike), Orange (It&';s On-Range). Exchange your sleeve to switch up the look of your All-Day Adventure Flask with the different colors, or bring the extras along to share with friends and pets! The handy dandy measurements on the inside of the silicone sleeves are crucial for getting that ratio right for freeze dried backcountry meals and cocktail shaking. The Adventure Flask isn&';t included, silly.