Movie S3.

Inflation of a combined soft actuator. Inflation of a combined soft actuator consisting of two interconnected fluidic segments, characterized by (Lbraid,Ltube)=(46,20) and (46,22) mm. In the experiment, we inflated the segment with water at a rate of 20 mL/min. At v=23 ml an instability at constant volume is triggered, causing a sudden increase in length, internal volume flow, and pressure drop.