Double incut. Do I really have to say anything else? So yeah, these are very comfy while you're hanging there from your roof (for what seems like an eternity) trying to figure out where to put your stupid feet. But, here's the cool thing. Most jugs are basically approached from ONE direction (more or less straight in). These jugs can be grabbed straight on or from either side. So, if they're "set" for a specific problem, you can still get at them from many other angles as well. I love that about these holds. When I'm just flailing around on my roof working on core strength, I can grab at these from almost anywhere and get a good grip. These would be huge bomber holds on a kids wall for sure!!!