<p>1oz graduated plastic measuring medicine cups made of #5 recyclable polypropylene.</p> <p>Unlike the more rigid style of medicine cup, this cup is smooth on the bottom and interior sides, making it very easy to stir and mix. (The harder, stiffer type cups have 4 little ridges or nubs on the bottom of the inside of the cup with the measurements embossed on the inside making it very difficult to stir or mix and possibly producing air bubbles when mixing liquids.)</p> <b>The kit contains: </b> <p> 200 x 1oz graduated plastic measuring cups.<br /> These 1oz cups have <b>very accurate measurements</b> and are flexible enough to be able to easily pour from. </p>