Birkenstock - the footwear brand known for its two-strap sandals once associated with backpackers and now, thanks to mainstreaming of norm-core, high fashion - has collaborated with German jewellery designer Patrik Muff. The special edition piece, handcrafted in limited numbers using sterling silver, will be feted at an in-store event this Friday night (13 November 2015) at Assin, Melbourne, between 6-8pm. With few pieces available, you’d best be quick.