Hey now, it’s an ice tube! Here’s the frigid down low from the Santa Cruz Surfboards Tumblr:
Santa Cruz Europe team rider “Nathan Carter” getting drained on the 5’10 Gdeck here! Water temp was about -6 Celcius this day, which is about 20 degrees Fahrenheit! Nathan had ice forming on his wettie on the way back up the beach! Talk about dedication to get barreled! Way to go Nathan!
Radical.

What’s the freezing point of salt water?
28.4°F
http://www.onr.navy.mil/focus/ocean/water/temp3.htm
wow. it is an icetube…rad.