British Invasion. Show some love for the British invasion with Union Jack Suspenders. These British flag suspenders are perfect for Halloween parties, international events, and royal celebrations! Adjustable suspenders, one size fits most. British flag suspenders are approximately 1 1/4. Clip on Union Jack suspenders. Silver and black accents. Be the star of the show, no matter what the event! Stock up on costume accessories for Halloween, dance competitions, musical events, or special evenings out on the town. Part of Holidays Halloween Halloween Costumes & Accessories Halloween Accessories