Material: They appear to be made from a lightweight, flexible material, likely EVA (Ethylene Vinyl Acetate) or high-quality rubber, which is common for "cloud" or "shower" slides [1, 15].
Construction:
Footbed: The interior has a textured, non-slip surface for grip.
Sole: The bottom of the slide (visible in the background) has a deep, angular tread pattern designed for traction [1, 2].
Profile: They have a slightly chunky, contoured silhouette, similar to modern "streetwear" slides.