Title: Yeah baby, kinky!
Review: It is 1/2 inch black tubing; it won't grow algae inside and it is rough so it will more-or-less stay put, and it has some elasticity so you can pour boiling water on it and stretch it over the lip of a fitting. But it kinks like nobody's business and that is my biggest gripe.25 feet is nice and long so I've used this in 2 pools in unstructured under-water routing and it kinked in both situations. And, it doesn't like to go back to an unkinked state. If you bury this outside your watercourse I can almost guarantee you it will change form and kink and your flow rate will suffer. Keep looking!
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