Milton Gästrin has attracted attention early in his career as Article in HockeysverigeRead the sourceArticle in HockeyNewsRead the sourceArticle in SportbladetRead the sourceArticle in Brynäs IFRead the source. Article in HockeysverigeRead the source grew up in Järved, Örnsköldsvik, with the outdoor rink at Getinghov part of his childhood. In a May Article in HockeysverigeRead the source interview with Hockeysverige, he recalled starting to skate there at the age of 5 or 6. Article in HockeysverigeRead the source.
His Article in MoDo HockeyRead the source was Järveds IF. In the same interview, Gästrin recalled his first appearance for Sweden in Finland during the 2022/23 season, with Article in HockeysverigeRead the source coaching and Gästrin serving as captain. Ahead of autumn Article in MoDo HockeyRead the source, MoDo announced him among the students admitted to the first year of its hockey upper-secondary school programme, combining school studies with hockey.
Speaking to HockeyNews in October 2025, Gästrin described Article in HockeyNewsRead the source as a mentor both on and off the ice. He also explained the Article in HockeyNewsRead the source name on his sticks: a childhood nickname he had used on Snapchat. Article in HockeyNewsRead the source.
His family includes his father Article in HockeysverigeRead the source and younger brother Malcom. In a March Article in HockeysverigeRead the source interview with Hockeysverige, Milton spoke about competing against Malcom at Monopoly and landhockey. On Article in HockeysverigeRead the source, the brothers played on the same line for MoDo’s senior team.