If you're familiar with the cobra weave, then this should be a fairly easy bracelet for you to make.
Strand one (blue cord)- this will be used for making the 'x's and the knot. You will need three times the size of your wrist, plus enough to easily tie a knot. I usually add about 8 inches for the knot I'm making. I used 56½ inches for strand one.
Strand two (red cord)- this strand will be used for the cobra weave. Double your wrist size and add roughly 6-7 ft (or, for those of you who make cobra weave bracelets, about half a foot more than what you would normally use. I used 7ft 7in for strand two.
**Keep in mind that its better to have too much string than too little because its easier to cut off excess than to add string.**