Sewn onto the bottom half of this mat is a sectioned brush holder made of 100% cotton cloth. There are 12 slots for brushes ranging from 2" to 5" wide. Just insert each brush handle into the sleeve and roll the mat up. The cloth will help keep brushes from moving and being damaged while transporting from one place to another. Measures 13-3/4" × 14-1/4". (Brushes not included.)