OpTech 1801021 Cam Strap QD Wrist Strap for Compact Camera, Black (Electronics)
Caveat: I'm a fan of the Op-tech support solutions. For the big cameras (Nikon FX and DX), there is the "adult" system in several versions, for small (Fuji X-E1, X100, Sony NEX3N) is used with shoulder strap and wrist strap, this small QD system