Wax is the default way most people grip a surfboard, but anyone past their first few sessions knows the routine: re-waxing before every paddle-out, scraping off the gunk when it goes brown, and watching it melt into a slick mess on a hot day. A traction pad, a sheet of textured EVA foam that adheres permanently to the tail (and sometimes the deck), solves all of that. Stick it on once and it grips your back foot for the life of the board, which is exactly why nearly every shortboard you'll see in the lineup runs one over the rear fins.
For beginner and intermediate surfers, a pad does something wax can't: it gives your back foot a physical reference point. The raised arch bar and angled tail kick tell your foot where to sit without you having to look down, which quietly trains a better, more repeatable stance. That's a real coaching aid when you're still learning to drive off the back foot through turns. Most surfers keep wax on the front two-thirds of the deck (cheaper and replaceable where your chest and front foot land) and run a pad only on the tail.
The pads below span roughly $22 to $65. The differences at each price point are genuine: adhesive strength, foam durability, how raw the texture leaves your knees and shins on a long session, and how aggressive the arch and kick are. None of that shows up in an Amazon thumbnail, so this guide is built to help you read the low end versus the high end and pick the pad that matches how often you surf and how hard you're pushing your surfing.