• He sees you when you're sleeping tee: a pale man in a Santa hat peering through a frosted window between lace curtains, for dark-humour fans at Christmas
• Sizes S to 5XL, unisex fit, in many colours
• Material: 100% cotton across three qualities; Standard Gildan 5000 is the midweight everyday tee, Heavyweight Comfort Colors 1717 is thicker with a washed feel, Premium Bella Canvas 3001 is the lightest and softest; heathers are blends
• Printing: with DTG the ink soaks into the shirt itself, so you cannot feel the design; with DTF it is pressed on as a thin layer, so the white linework stays crisp on a dark shirt
• Wash inside out in cold water and tumble dry low

Lock the windows this Christmas.