X4U - My Clever Companion. Where do you put your wet umbrella after use? In the Knirps Dry Case®, of course! Equipped with absorbent microfiber cloth, the case cleverly protects everything sensitive to water in your bag from moisture. Weighing only 130 g and with a small packing size, your umbrella is always at the ready. Effortless handling and stability in the wind highlight nearly 100 years of “German engineering”. A 5-year warranty makes the compact X4U a faithful companion in “whatever the weather”.