What is "jacksgap"

JacksGap is a British YouTube channel run by identical twins Jackson Frayn "Jack" Harries and Finnegan Frayn "Finn" Harries (born May 13, 1993). JacksGap has more than 4 million subscribers. Originally created by Jack Harries to document his gap-year in mid-2011, the channel experienced a rapid increase in popularity after the addition of Finn Harries as a regular contributor.