Trade Twin Pack 2 x 32GB Digital Memory Card class 10 SD SDHC class 10 for Canon EOS-1D Mark III, EOS-1D Mark IV, EOS-1Ds Mark III, EOS 60D, EOS 450D, EOS 500D, EOS 550D, EOS 600D, EOS 1000D, EOS 1100D, Ixy 50S, Kiss X2, Digital Rebel T1i, T2i, T3, T3i, Xs, Xsi 2 x 32GB Class 10 Ultra High Speed SDHC Memory Card class 10 Life time warranty Data is not lost when power is turned off Write Speed: 19MB/s. Read Speed: 20MB's All Cards shipped FedEx Express with Tracking Number for a trouble free serivice 2 working days to most parts of the USA