Top positive review
Silicone tubing ... the only way to go.
Reviewed in Canada on December 6, 2019
Colour aside, depending upon your preferences, this is far better than black or clear. By comparison, although it is tough and durable, it is softer, more pliable, easier to use, and will not noticeably harden over time.
There is some built in memory so that, where it has been bent in the packaging, these curvature(s) will tend to remain. This is only a minor inconvenience which might be avoidable, at least partially, by purchasing the product in a large roll.