I bought this case based on the description and pictures on sonyericsson.com. It's called the "Active Case" I guess because it's designed for people who want to carry a phone while exercising. I like it because I'm a klutz and know one of those flimsy leather cases wouldn't protect my phone from getting trashed when I bump it against something.I give it 4 stars instead of 5 because the silver fabric with black webbing exterior is a little funny-looking, though it's growing on me. It's cheap, and protects my phone, that's what's important to me.It comes with a stretchy armband to use to strap the case to your arm or leg. I don't think I'll use it, but it might be nice for runners or walkers on the road or on a treadmill.For the guy who wanted to know how big it is: my T237 phone is 3.9 x 1.7 x .7 inches (10.1 x 4.3 x 1.8 cm) and the case isn't more that .25 inches bigger on each side. And it fits perfectly.