T-shirt design website Threadless is branching out from its traditional terrains with a competition inviting designers to submit designs that can be used on both T-shirts and Havaiana flip-flops.

Threadless works by inviting creatives to submit their designs, usually for T-shirts. Visitors to the site can then vote on their favourite designs, and the most popular are made into T-shirts (and hoodies and various other items) which are sold through the online store.

Threadless has now teamed up with Brazilian flip-flop brand Havaianas to invite creatives to submiit designs that work for both T-shirts and flip-flops. The deadline is April 4.

Two designers will be picked as winners, and will win:

  • $2,500 (about £1,660) from Havaianas
  • Their printed design available as a tee and as Havaianas flip flops
  • $500 (£330) Threadless Gift Certificate
  • $2,000 (about £1,300) in cash from Threadless

For entry guidelines, rules, and templates visit the Threadless website.