Bamboo Calligraphy Brush Holder Rollup Protection 38x36cm (15x14") - Large
This item is really of high quality. It's pretty sturdy and well made to give nice protection to your brushes.  Not at all flimsy/thin, the weight is around 100 g (4oz).   They are all sown nicely together. Made from real bamboo. We also carry smaller size. ASIN  B00IXDCKM2