I call TOTAL BS. This has "marketing ploy" written all over it, (with bad grammar to boot!)
Normal airline tubing can lose up to 20% of CO2 through its membrane. Silicone tubing reacts w/ CO2 and render it less efficient (thus the silicone hardening over time under CO2 usage). Our special CO2 Resistant Tubing loses less than 1% of CO2.
What does that even MEAN? "Can lose up to 20% of CO2"? 20% of what? Of the gas passing through it? So for every liter of gas I pump through the line, 0.2 liters escapes? I think I'd notice that. 20% of the gas in the tank? 5 lbs CO2 has a volume of 305 gallons at STP...so does this mean that as soon as I connect the hose to my tank, I lose 0.2*305 or 61 gallons of CO2? I think I'd notice that too. No timescale is listed here....and since the rate of diffusion through the line would not depend on the size of the tank, what are they claiming the leakage is 20% of?
I would not buy into this crap. Buy your hosing at menards for 25 cents a foot and call it a day.