Will rubber mulch blow away in the wind?

Heavy rain and strong winds are not likely to phase Rainbow Mulch. In fact, some customers have used leaf blowers a few weeks after installation, and the mulch has stayed in place. To reinforce it, created a border or boundary. 

How does it stay in place? 

The rubber stays fairly dense during the manufacturing process because of minimal air exposure creating less buoyancy. After installation, the sponge rubber mulch has a bonding nature, created a barrier together against its loose pieces.