The On-the-Go Big Betty Flexible Wine Bottle - Holds a Whole Bottle of Wine! The easiest way to transport wine. This flexible and foldable wine bottle is perfect for rolling and folding to take with you virtually anywhere. No more broken bottles. The strong plastic material doesnt break like typical glass bottles. Big Betty On-The-Go is ideal for camping, picnics, concerts, by the pool, and tailgating. Holds a whole bottle of wine. Fits an entire 750 ml bottle of wine comfortably. Safe and easy to clean. Its made of BPA-free plastic that is freezer-safe. To clean, simply rinse with warm water and allow to dry. Affordable and creative gift idea. Whether youre treating a friend or family member, theyre sure to appreciate (and actually use) this clever gift.