a heat pack for warming the heel of an infant with a front panel and a rear panel wherein the rear panel is adapted for placement on the infant &# 39 ; s heel and has an outer layer formed of a nonwoven material which may be wetted . a band is provided for attaching the heat pack to the infant &# 39 ; s heel . heat from the heat pack effectively drives water applied to the nonwoven material into the infant &# 39 ; s heel where it is then trapped in the skin under the heat pack . by thus moisturizing and softening the skin , a puncture necessary for taking a blood sample is eased .