19lt. it is compatible with the carboy. it is handmade. straw knitting is a natural material. our newly knitted mats may be dark in color, as it dries and is used, the color tone will be the same as in the photo. maximum 4 pieces of this product can be ordered. swordslife reserves the right to cancel orders over 4 units. more than 50 stocks are available to be sold at the campaign price. the listed price is valid until 17 october 2026. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.