1.combined support mat grain sliding sleeve, use import PC material, heat dissipation good low temperature resistance, environmental non-toxic, no smell. 2. this product has a multi-angle stereo shock resistance to fall off, no matter from which direction, all can be protected from harm. 3. the unique design of jacket phones can support suspension, is the first choice for outdoor sports enthusiasts products;And can adjust the Angle of like easy to see Movies, TV, Internet, play games, etc., avoid sore hand phone for a long time. 4.high-precision mold production, cover slides up and down is easy to insert and pull out. Provide all interface reserved (charging, synchronous port mouth, headphone jack, side keys, etc.) 5. real machine mould, repeatedly tried to reproduce after grinding accuracy, installed effect is best. 6.this product impact resistant sexual strong stretch bending size stability; 7. appearance fashion and easy, product multi-function practical wear-resisting, color variety, are favored by customers at abroad! 1pc into 1 bag,40pcs into 1 carton: carton size:34*32*19cm carton weight:2kg/carton