A cold pack that can be fidgeted in a human hand. The cold pack encases a heat-transferring substance and provides a rigid portion suitable for being securely held by and readily fidgeted with fingers of said human hand. Heat-conducting grooves and heat-insulating surfaces are built into the rigid portion, with acute edges, jutting bumps, guard rails and other textures to provide grip. Fingertips alternate between holding the cold pack by said grooves and surfaces, thereby applying dynamic cold therapy to the same fingertips, rest of fingers, the hand, and other body parts requiring treatment for swelling, inflammation and trauma arising from friction, compression or minor burn injuries. Timely application of dynamic cold therapy can thus prevent formation of blisters in fingers and hands commonly seen in string players, musicians, sportspeople and workers caused by repetitive contacts with objects, and by unexpected contacts with hot surfaces.