Largely tightly and accurately

Pro:
+ Pretty good waterproof: The HTC Desire is tricked from behind and then the "lid" collapsed, which closes with Velcro. Directly on the upper arm (or to the skin) is then only an area neoprene. It may be that from time to time some steam coming in, but this is no fogging, but only visible as small spots, the film sticks on the display when you touch it. But this is then (if it occurs) really minimal and justifiable.
I walk usually about 1 hour and so wearing it on bare upper arm.

+ HTC Desire fits in exactly. Buttons are easy to operate even while running. The only hole that remains is the headphone plug, which is also in the right place. Thus, even in light rain, the HTC Desire is the best possible protection.

+ Operation is possible very well by the film.

+ Does not rub on bare upper arm

Neutral:
, max. Scope (for example, if you wear it on the upper arm, which is usually the case): 38 cm. I have a small upper arm circumference of 32.5 cm, which works without problems even in winter with jacket.

Negatives:
- Inelastic: As a velcro strip running along the whole band, the amount is fixed, the adjusting. The comfort is not therefore as good as at
SportWrap Armband for Apple iPod & iPhone. But you get used to it. The fact is that there at the same pressure on the upper arm easily slipped as the SportWrap Armband for Apple iPod & iPhone.

Compared to SportWrap Armband for Apple iPod & iPhone:
I had one year of my HTC Desire, the
SportWrap Armband for Apple iPod & iPhone.
Since the Desire is slightly longer than the iPhone and it has a "slot" on the back with a strap, it was never very close.
It always formed droplets on the back of the phone. '(The igadgitz is here much better, since virtually waterproof.) Since the tab on the back is also at only iPhones over the neoprene back panel, I suppose, that it is even there leaking.
The advantage of the SportWrap bracelet was that it had broken the tape Velcro strips, which brought a certain elasticity which the seat and the comfort positively influenced.
But it also had 3 holes (2 above, 1 below), which is not necessary for the HTC Desire.

Conclusion:
When the tape was still elastic, it would be perfect.