Signing a futures contract locks in prices of the shoes for however long you agree on. A consistent price of the shoes from the supplier will allow the shoes to continue being made for the same price, and sold at a much higher price, for time to come. The gap between cost and profit is guaranteed to not get smaller.
Prices of the shoes are not locked in, so the cost will fluctuate
Skip all the paperwork including future contracts & Options
Buying an options contract is almost a back up for changing your mind. This gives you a choice, a guarantee if you would like to buy a futures contract later down the line.