Perfect for everyday use and high-performance activity, this water bottle is designed to carry with you and help you roll out anywhere. The smallest MOBOT is great for targeted muscle release that might be harder to get to with a large foam roller. It's the ideal size for a handbag and is also easy for kids to use. Single-walled to maximize water volume, you can fill it with cold water for an icy roller or fill with warm water for a heated roller.