Our pizza boxes can be used with lids or without lids and can be stacked on top of each other. They can also be used as a fermentation box for sourdough or yeast dough. Maintain the ideal temperature and humidity for optimal dough-proofing results. Made from high-quality, food-safe materials, our bread proofing box and pizza dough kit are designed to endure the demands of a busy kitchen. BPA-free plastic and easy to clean, it's a dependable companion for all your homemade dough-proofing needs. Pack Size: 3 x Dough proofing Containers. Keep your pizza dough fresh and perfectly proofed with our premium stackable dough-proofing containers. Ideal for maintaining optimal dough texture, these versatile dough-rising container also work great for keeping fruits, vegetables and other food fresh and crisp.