Softboxes and umbrellas are great lighting modifiers but they can easily become airborne from a gust of wind when shooting outdoors. Don't risk damaging your flashes or studio lights. The Phottix Stay-Put Sandbags II are available in three sized and hold 3 kg, 6 Kg and 10 Kg of weight and can keep a light stand firmly in place when shooting outdoors or in the studio. These are indispensable accessories.
Shoot safely - always use a sandbag.