Jack Wills Grey zip up hoodie with Union Jack and number 3 #loungewear #winterwear Vintage jack Wills The selected item is a vintage Jack Wills "Physical Training" Full-Zip Hoodie. This classic piece features a grey marl finish, a split kangaroo pocket, white drawstrings, a left-chest graphic text with a mini Union Jack flag, and a signature oversized number "3" graphic on the back