FROM THE WORLD'S LEADING MANUFACTURER OF WETSUITS. The Dawn Patrol offers performance and warmth, as well as durability and value. This wetsuit has many of the high-end features you'll find in Rip Curl's performance wetsuits.E5 Flash Lining, one of the warmest and most comfortable linings, flexible E5 neoprene and E4 thermal lining. The E5 tape is applied to high stress areas to increase resistance and durability. Smooth mesh elements that absorb solar heat and reduce wind chill are a key feature.