Perfectly compatible with Polaris 280 and 480, K13 and K16 robot pool cleaners. Same design and same quality as the original Quality components: Ultra-fine mesh to capture the finest debris, high-end zip closure, resistant seams with reinforced borders. The connection between the bag and the rigid plastic fixing ring keeps the entrance to the bag always open and allows better passage of waste. Easy installation and use thanks to the automatic locking claws, Velcro attachment to the pipe for better passage of debris, easy opening of the bag thanks to the quality Velcro that runs the entire width of the bag. Set of 2 stringer bags adaptable to ZIP for Polaris 280 robot or 480. Quality at the best price. Product description Set of 2 stringer bags adaptable for Polaris 280 or 480 pool cleaner, model identical to K13 K16. Closure of the bag by a zipper or zip closure. Quality materials for better longevity.