The Phottix Extra Large Octa Easy-Up HD Umbrella Softbox with Grid 120cm is made with internal white fiberglass spokes for high durability.Perfect for on-location shooting. It folds down like a regular umbrella but expands straight into a square softbox for instant use, saving time over traditional softboxes which require rods and speed rings for assembly. The recessed-front diffuser allows for more precise positioning and feathering of light. Included is a removable grid to better control light spill in situations when accuracy is essential.