The Back 2 Front rainbow loom bracelet was Designed by Rob at Justin's Toys
This bracelet was called the back to front because you end up going back to the front when you are applying rubber bands and when you are looping. It is basically a classic single that is looped over itself 3 times.
Tips: make sure you do not overlap any of the layers. Try choosing 3 different colors or 3 sets of colors for the best results.
You can also use the setup featured in this video for the triple link chain, Saturn link chain and cap link chain.
To calculate the number of pegs you need to go in, just measure your wrist in inches and multiply that number by 4 (round up),