Polycarbonate tealight cups. Not reusable. One pound of wax makes approximately 32 tealights. Packaging measured by weight, quantities are approximates. Non-toxic, recyclable polycarbonate - safe for the environment! Manufactured with a UL 94 V-0 & rated polycarbonate (Underwriters Laboratories (UL) states that a V-0 rated material, when ignited, must self-extinguish within 10 seconds and no drips of plastic are allowed. & A V-2 rated material must self-extinguish within 30 seconds and can drip plastic. & The requirements for both grades are approved under the ASTM standards for candle fire safety.) 1 1/2 inch diameter by 3/4 inch deep (37.8 mm by 18.8 mm) More attractive - candle light glows right through! Stays cooler - safe to touch Suitable for use with scented candles Great for all waxes: beeswax, soy paraffin, palm, vegetable and more Recommended maximum candle burning time is 3 hours Counted by weight.