1) Material: Silicone
2) Stick to the phone body automatically, can be held by finger
3) Durable 3-layer construction, silicone- steel-silicone
4) Dimensions: 8.5cm x 4.3cm x 0.2cm
5) Weight: 8g
6) Compatible with: iPhone 5 & 5C & 5S / iPhone 4 & 4S /Samsung Galaxy S IV / Galaxy SIII / all smart phones