Is there any possible way to attach your iphone to your wrist or something?

So for summer i was thinking of getting a lifeproof case for my IPhone 6 in order to film underwater when i'm at the beach etc. But for example if i go on jetski or something of that sort and i don't want to loose my phone, put still film, what do i do? Is there any wrist bands for iphone or something of that sort?

Tape