The Toshiba U2G-032GT is a limited edition stick that you can use to boost the performance of your Vista PC. You can also use it of course as a normal memory stick to carry data around.
It features an integrated password locking function to protect your data.
The 32GB Toshiba ReadyBoost stick measures 63x20x8mm.Toshiba also offers smaller versions of their ReadyBoost complaint sticks. You can choose between 1GB, 2GB, 4GB and 8GB storage capacities.
Via this Toshiba press-release (Japanese).