What happens when there’s a twist in the story of a pen refill? The answer is simple. More longevity and less of waste!
The concept is called the T&T Pen-Ink Chamber that gives the regular ink refill a new look in order to let it last longer as compared to the straight ones. The idea comes from Han Chi-hoon, Kim Yeon-soo, Park Byong-gon and Kim Sung-geun and is one of the entries of 2011 iF concept design.