Fill the stainless steel BDSM ice lock with water and place it upright in the freezer. Once completely frozen, this device is ready to use. The O-rings at both ends are perfect for attaching cuffs or other restraints, and the lock ensures no escape until the ice melts.

Comes in a handy carry case.

While not really e-stim related, you can obviously wire up before using this for some predicament bondage play sessions.

Keep things spicey.