Feature： Anti-puncture layers on keel Appearance： Matte olive green (no glare). Seam lines nearly invisible. Quality： Resists diesel spills and salt corrosion. Air pressure drops only 3% monthly. Service： Survived dragging over oyster-covered docks. Still airtight.

Material： Military-grade Hypalon fabric (tested in 45°C Arabian Gulf) – zero UV damage after 8 months. Feature： Drainage works perfectly in rough waves. Appearance： Low-profile tactical grey (non-reflective). Welds 30% cleaner than my old 680 model. Quality： Endured 3 typhoon seasons. No leaks, valves stay rust-free in saltwater. Service： Over-engineered for safety nerds. Worth every penny.