This is a Westbeach T-shirt or sweatshirt. Westbeach is one of Lululemon founder, Chip Wilson’s other companies that made clothing for people like snow boarders and skiers.
Here is a closer view of the front.
According to the Westbeach website, 1979 was when it was all started, when they started making surf apparel. In the 1980s, the moved to snowboarding apparel.
‘It all started in a shed, in Calgary, Alberta, back in 1979’