Answer: parachutes

AnswerCrossword Clue
PARACHUTESTwo waterfalls?
PARACHUTESTwo water slides?
PARACHUTESThey come with strings attached
parachutesA cloth canopy that fills with air and allows a person or heavy object attached to it to descend slowly when dropped from an aircraft, or that is released from the rear of an aircraft on landing to act as a brake
parachutesPARACHUTE, to descend by parachute