Adorable Black Hole in a Jar! Anti-Anxiety, Stress Relieving 10 ml Bottle w/ Cork Stopper - Size: 24 mm x 41 mm (.95 x 1.61 in.) Black Hole is a 1.5mm 100% Wool Ball (Does not come out of jar) A black hole has a gravitational pull that is so intense that nothing, not even light, can escape it once inside a certain region, called the event horizon. Open Jar and all your problems will vanish :) Disclaimer ** We can not guarantee the validity of the previous statement.** Quality, glass vials!! Perfect gift for the geek who has everything :)