* Measure across garment 1cm down from armholes
** Measure from highest point of shoulder to bottom edge of garment
• Made of 100% pre-shrunk cotton, will not shrink after washing • Permanent front & back prints, will not crack or fade • Hand or machine washable at 40°C / 104°F • Do not iron print, iron inside out
If you don't have a UV black-light, the t-shirts will still glow in the dark and of course be visible in normal light.
For better glow-in-the-dark results place t-shirts near a bright light source and allow at least 30 minutes for charging.
The brighter the light and the more time the t-shirts are exposed to it, the more energy they absorb and the more they will glow.
Additionally, the darker the room when you switch off the lights, the more pronounced the night glow effect will appear.
A black light source will charge the t-shirts better and make them glow more than a normal light source would.
Alternatively, you can use fluorescent lighting for charging (FT tubes or small CFL ecomomy lamps).
Old incandescent lamps cannot provide sufficient charging as they do not emit UV light.