This tape has AMAZING photoluminescence.  It is brighter and longer-lived than anything we have ever seen, including domestic 10-hour and 24-hour glow tapes.  It's value for brightness after 10 minutes in darkness is 179 mcd/lux/sq.m.  Glows up to twelve hours with gradually diminishing brightness.  It meets and exceeds NYC building Code RS6-1 and 6-1A.  Best used as a luminescent marker indoors, and can be used outdoors, but intense sun will shorten its lifespan to around 6 months.  Apply only in straight lines or spiral wraps on a hoop.  This tape is not recommmend for volleyball court lines as it will fragment when being removed,  It does not have great tensile strength either and can separate if applied to a surface that expands when it gets hot (a hula hoop lying in the sun).  Advise drilling a 1/16th inch hole in the hoop to allow expanding hot air to escape.  Also, it is GREAT on flies and fishing lures!

This adhesive tape is somewhat less bright than the high-energy tape above, but it has a clear over-laminate that gives it tensile strength and abrasion resistance.  It is a great tape for hoops, but is not recommmend for volleyball court lines as it will fragment when being removed,  It's value for brightness after 10 minutes in darkness is about 130 mcd/lux/sq.m.  It glows up to 10 hours with gradually diminishing brightness.  Can be used for luminescent marking both indoors and out. 

These 10-hour and 24-hour US made photoluminescent tapes meet requirements of ASTM E 2072-00, et al, and MIL-L-3891B for photoluminescent safety markings,  Glows up to ten hours (long-life) or 24 hours (ultra-premium) with gradually diminishing brightness.  This tape is UV resistant and is good for long-term outdoor use, in terms of years.  The tapes below are recommmend for volleyball court lines as it will not fragment when being removed,