Crocs Comfort Level Guide Crocs comfort Level 1. Whether beach combing or river walking, the Swiftwater Wave water shoe has you covered! Croslite™ upper. Easy slip-on style. Ventilation ports add breathability and help water and debris drain away. Odor-resistant, easy to clean, and quick to dry. Croslite™ foam footbed for all-day comfort. Lightweight, non-marking soles.