The Boulder Cube Chalk Bag is ideal for stationary use or on the move. The carrying strap allows you to quickly transport it to the next problem. You can then stand it up – thanks to its stable base, nothing can easily throw it off balance. The chalk bag will stay standing upright, allowing you to add more chalk without any spillage. And a very secure drawstring closure system makes sure the chalk stays sealed inside the Cube while you are on the move.