Nike recently discontinued their Killshot 2 sneakers, a /r/malefashionadvice staple. Right now, they’re only in stock for a limited number of sizes. They periodically reintroduce stock from time to time, but most sizes are unavailable most of the time.
I developed a small script that sends an SMS message when a J.Crew product like the Killshot 2s is back in stock. Just create a free Zapier account, follow these instructions, and copy-and-paste this code where you’re told to.