The focus when it comes to order picking is usually (and justifiably) on the fastest-moving product. You slot your warehouse for fast movers. You pareto-focus on the 20% of the product that generates 80% of the business, as you should. But it’s also useful to consider the slow-moving inventory and pick locations. Simply putting the slowest movers in the least accessible area may make them consume more order picking time and storage space than necessary.