We're proud to reintroduce the Ooni Stack, originally funded on Kickstarter by you, the Ooni community, and now back by popular demand - and better than ever, thanks to some key design tweaks. Now, it's time to take your pizza prep game to the next level with our space-saving storage solution. Stuck-together dough balls stop here when you proof them individually in each of the Stack's three durable, borosilicate glass bowls. Afterward, keep your pizza toppings within reach without using up precious counter space. When you're done, the airtight seal on the bamboo lid - crucial for moisture control - is removable for easy cleaning.