don't be dissatisfied with materials that stop glowing between dk and dawn. this tape， after exposure to a good light， will keep glowing for more than 24hrs and be clearly visible to the dark adapted eye.<br /><br />imported for the  this tape meets their military specs.<br /><br />specifications:<br />safety: inert and non-toxic<br />life of afterglow: 4 hours<br />lifespan of luminescent material: 5 years<br />adhesive: non-permanent/peelable type<br />color: light green<br />emission colour: green<br />width：25mm<br />length:1m/2m/5m/10m<br /><br />countless es including:<br />crafts - light switches - hotel rooms - bicycles - schools - camping<br />key holes - boating - nightclubs - offices - warehoes - garages theatre - fishing - name tags - alarm clocks - laboratories - hobbies - theatre<br /><br />package include:<br />1pcs night glow sticker