All Osier Belle designs are solid in structure (no flatpacked, cheap options) and build to last. As a result, our furniture is extremely strong and sturdy. We have designed for many penthouses and furnished eccessively windy locations. We are proud to say, our furniture is yet to move, let alone be blown over in high wind conditions, so we sell with confidence! The Osier Belle signature tie also holds cushions in place and if you are still concerned, talk to us about our Frappant Extreme Weather design, cleverly created with hidden compartments for weighted bags if you are still worried.