Leo Pack is a "concrete flow agent." By using one bag per cubic meter of ready-mixed concrete, you can increase the slump by approximately 3 cm (※This may vary depending on the mix). The benefits are... ① Easy! Lightweight! Compact! Anyone can easily add it, and it's easy to repair and adjust even if the slump decreases. ② Doesn't degrade the quality of the concrete! By powdering it, excess water is removed, allowing for flowability without changing the unit water content of the concrete! Selling at a low price for inventory clearance. Shipping will be done in another cardboard box. Thank you.