Polaris Leaf bag, part # K15. To fit Polaris model 280 pool cleaners. This is an original factory service part, brand new and sealed in an individual Polaris package. K-15 The Polaris units come with an All-Purpose Bag especially designed with very fine mesh for collecting sand, silt, light leaf loads and other debris. The leaf bag is made of a more durable material to collect larger, heavier types of debris such as large quantities of leaves and acorns.