Penn was founded in 1910 and is responsible for introducing the first-ever pressurized tennis ball. The capsule offers eight items, ranging from hoodies, slip ons and '90s skate-inspired Lowland CC's.

Filmed over two years, the 65-minute film will "lift the lid on the unsung heroes" at the first Grand Slam of the year.

Modern tennis balls are made of a hollow rubber core, covered in a wool or nylon shell which is known as the nap. Pressurised air inside the rubber core makes the ball bounce. Balls which haven't got ...