У вашего броузера проблема в совместимости с HTML5
Scheepjes SoftFun in dsrk grey and mint green. You will need the approximate same amount of yarn of each color.
I used 4.5 mm crochet hook ( size 7 US)
Written patterns with all info for sizes from S - X Large and 2X Large, with charts and sketches here
https://by-katerina.com/plaid-summer-sweater-crochet-pattern/