ChalkTite Chalk Bags feature Bluewaters EZ Shut VELCRO brand closure system. Simply squeeze the top of the bag together and voila, a simple, chalktite closure. Perfect for bouldering sessions, simply open the bag, chalk-up, then shut the bag and toss it on the ground. No more spilled chalkThe Deluxe comes in a premium fabric and includes a 3/4 buckled belt. The Sport comes in a durable nylon with a contrasting rim and includes a 2mm cord belt.