In the event of rain, a customer can cancel the delivery without any charge. If the customer chooses to accept the unit(s), they understand that there is no refund. If it rains, the units are still usable. Jump for Fun recommends that in light rain or showers that most of our units are covered and it is safe for kids to use our products. If heavy rain occurs, have the kids exit the unit and go inside and wait for the rain to quit. The units will accumulate water, so have an adult go inside the unit with a towel and dry out the unit and its ready for use again. The surfaces will bubble at the seams, which is normal because of the air that is coming out. Please leave units inflated until the driver arrives to pick up.