West Ham United Away Shirt 2017-18 The Hammers are back in black in the West Ham United 2017-18 Away Shirt . Standing out on the clean black jersey is vibrant “bluefish” detailing that extends to the woven monochrome club crest. On the back of the shirt is a Union Jack motif with “The Hammers” text as a nod to the club's history. The lightweight shirt fabric includes body mapped ventilation panels on the back for targeted cooling. Details: • Regular fit • Woven West Ham crest and classic Umbro diamond logo • Body mapped ventilation panel on the back • 100% polyester