Listings use the term to describe a lightweight, flexible design that delivers what they call "360-degree comfort."
Product notes recommend spot cleaning or wiping; listings repeatedly describe the shoes as easy to clean, quick to dry and generally water-friendly.
Many styles use pivoting or adjustable heel straps for a more secure fit; some work styles list hook-and-loop closures or textured pull tabs to make on/off easier.
Descriptions commonly call the shoes "incredibly light," and some styles are specifically described as buoyant and water-friendly.
Most listings specify EVA (ethylene‑vinyl acetate) for the upper, insole and outsole; a few styles also note a fully molded foam construction for added lightweight cushioning.
Many listings list EVA for the insole, and several styles describe a fully molded foam cushioning design that provides lightweight cushioning.
Many descriptions mention ventilation ports or advanced toe-box ventilation that increase breathability and help shed or drain water and debris.
Many styles accept removable upper charms through upper holes and commonly include pivoting or adjustable heel straps and textured pull tabs to secure the fit and ease on/off.