Blue SPD-SL cleats are Shimano’s newest cleat option and they exist as a middle-ground between yellow and red. Blue cleats have two degrees of float (one degree in each direction), allowing for a small range of movement while still delivering a high amount of pedaling efficiency. The float pivot point is at the front of the cleat, which eliminates lateral sliding movement while allowing a small amount of angle change from the pivot point back towards the heel.