Wave Well Bottle 550/720 ml. Purpose-built hydration bottle designed for open-water and coastal kayaking. Nylon-constructed secure cap connection prevents accidental opening during rolls, braces, and rough water paddling. Leak-resistant seal protects cockpit and hatches from spilled water. Ergonomic grip profile is designed for one-hand retrieval while seated in a kayak cockpit. 550/720 ml volume balances carry weight against hydration needs for full-day paddles. Marine-ready construction handles saltwater exposure, UV, and repeated drops without deterioration.