Ultra Cuffs, Chain TrainingTraining Restraints feature the exact same design, materials and construction as ASP's standard Ultra Cuffs, but with a special lock set that disengages when subjected to back pressure so the cuffs open with just a roll of the training subject's wrists. This facilitates 100% ''real world'' training, with the added speed, safety and efficiency of keyless release (key is only required if cuffs are double locked).