Epsom Salt, an unscented pure mineral compound (magnesium sulfate) in crystal form, packaged in a 19 pound re-sealable bulk bag. Color: natural/white Grain: Medium 0.2-3mm (standard) <br> <br> <b>Why choose Epsoak Epsom Salt? </b> <br> <br> Highest quality Epsom Salt in the USA. <br> Grain size specifically formulated to dissolve much quicker than other brands. <br> USP Pharmaceutical Grade. <br> Made in the USA. <br> #1 selling Epsom Salt brand on the web. <br> You will feel the difference in the quality. <br> Buy in bulk = bigger savings