The bracelet on the Nexus 5 is beautifully finished (have it in Pink) really slippery and despite a lot of sweat. Without protective cover on the phone it fits perfectly, but I have also managed to enter "squeeze" my phone with protective cover to. The first time, it took a while, but the bracelet has now stretched and now the mobile phone is already in much better without losing its grip. It can still operate well (Spigen Cover has indeed on pages 1-2mm distance from the display) and the headphones also fit into
I have very thin upper arms, but it holds bombproof anyway.
The key lockers I have not tried so far, All thing it seems to be very small and too rich for 1-2 key, but I did as I said not yet tried.
The color is very beautiful, it is a beautiful pink and not pushy, I like it very well.
On the whole, strong buy recommendation!
PS: The Samsung Galaxy Note 3 version I sent back because it is too large for the Nexus 5 with protective cover (for too long), but it looked good too !!!