Jack and Jones Core Jcopassion Crew Sweater. Jcopassion Crew Sweater by Jack and Jones Core> Sweater> Crew neck> Long sleeves> Ribbed cuffs and hemline> Jersey construction> Soft fleece lining> Block coloured panel to centre of chest> Large printed logo to front> Jack and Jones branding> 60% cotton, 40% polyester> Machine washable at 40 degrees