Once dough is kneaded and worked, it needs to be left to rise in a warm place before baking.
Turning the risen uncooked dough onto the peel for transfering to the oven can be a tricky moment, especially if the dough has stuck to the container. To avoid this, bread is traditionally left for its final rising in special baskets lined with a linen cloth, floured generously beforehand. These help the bread to rise evenly because the warm air can circulate through the sides, and the linen lining does not absorb the moisture from the dough. The French term for such a basket is "banneton".
If you intend to buy:
These are often made of willow, lined with a linen or cotton cloth.
They are available in different shapes, according to the kind of loaf you wish to make, from professional bakery suppliers. They are sometimes seen for sale in supermarkets, sold as table bread baskets (about 5-6 € each in 2005).