Crystal Clear Aquatics AAD00284 150-Micron Polypropylene Media Bag with Draw String， 14-Inch by 4-Inch</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>This 150 micron mesh bag with built-in drawstring is used to hold media in aquariums and ponds</li><li>Made of polypropylene material</li><li>It is industrial grade， machine washable and re-usable</li><li>Can be used with any media including all types of carbon， ammonia， nitrate and phosphate reducers</li><li>Measures 14-inch length by 4-inch width</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/41QG997-LFL.jpg' noproxy></br>