【Material】 This bread proofing basket is made of silicone material. The safe temperature range is -40°F to 446°F (-40°C to 230°C) and can be used in refrigerators, microwaves, ovens, and more. 【Package Includes】 4 bread proofing baskets. The diameter of the bread basket is: 13cm / 5'' and the height is 6cm / 2.4 ''. Enough quantity for your baking needs. These baskets are great for making sourdough bread. 【Easy to Use】 Sourdough basket is sprinkled with flour when in use, and then placed the kneaded dough in the basket for rise. Once the bread is fully expanded, take it out and place it on the baking sheet to bake. Just wait a moment, the delicious bread will be done. 【Space Saving Design】 These bread baskets are lightweight, collapsible and easy to store, they can be stacked in cupboards or drawers to help save space and keep cupboards neat and organised when not in use, making them a must-have item for all baking enthusiasts. 【 Ideal Bread Baskets 】 Ideal for a wide range of breads such as premium yeast dough breads, sourdough breads, bread bowls for dipping sauces or soups, rye breads and chappatas, etc.