The shape of the jusBounce bounce card is engineered and designed based on the reflection of the hotshoe mounted flash of 24mm zoom.
How I know? Because I'm the manufacturer of jusBounce and also one of the 4 ppl who after many round of brainstormings and discussions, came out with the current shape. Just for info, the original JusBounce card is manufactured in a plastic factory, each piece is laser-cut, thus the edges of the jusBounce card is smooth and all corners are rounded to prevent accidental injury to the photography. The squarish shape is for easy keeping and storing. The jusFasterner, velco which comes with every pack is from the oem bulk packing version of the original trademark brand Velco from US. This velco has the industrial grade strength and yet will not leave any glue stains on the flash when remove.
Just to keep up, I'll be launching a series of new products marketed under the 'jus' branding soon. Watch out for these products:
i.
jusBounce wide - a newer bounce card design that can cover up to 17mm for wide angle lenses.
ii.
jusColours - a sets of fun colour-gels for all hotshoe mounted flashes to give you the kind of creative flash photography that one can only do using strobes in a studio now.
iii.
jusCapIt! - a special designed camera body caps for both Nikon & Canon. Featuring on this camera body cap is a variable size pin hole from f/5.6-f/64 and the pin hold is protected with a fixed focal length of 35mm plastic lens element. This makes any Canon & Nikon camera body to become a Point&Shoot pin-hole camera.
The above products is targetted to launch in the last quarter of 2006. Currently in R&D stage and the prototypes will be out in July for testing.
Just for info, for those who wish to purchase the original jusBounce and feels lazy to copy and diy the design of the original jusbounce card, the stock will be arriving early next week to TK Photo located at Beach Road Shaw Towers (Jade & Prince Cinema) at 2nd Storey.