roswheel waterproof 4.2， 4.8 ， 5.5 inch bicycle mobile phone touch screen bag frame tube bag<br /> <br />specification:<br />material :600d+pu+pvc<br />color: yellow， black， red， blue<br />size:<br />s:  about 16 x 8.5 x 7.5 cm ， suitable for cell phone a