Aquaglide Summit Express TRSummit Express is an Aquaglide classic featuring a challenging, stepped climbing wall, a zero entry slide and a sizeable cave below the slide for playing, bouncing, swinging, and resting. The TR stands for Trickler Ready, which means this version includes an integrated Trickler Pocket for optional irrigation of the slide surface. The Summit Express can be used as a standalone focal point feature or connected to other Aquaglide Aquapark features using