Hot/Cold Pack 1.different size 2.different shape 3.can be OEM 4.T/T Hot/Cold Pack Usage: Cold ... compress: put the cold/hot bag into freezer to ... hemorrhage, heatstroke, itch, headache, strain, scald, fatigue. Hot compress:alleviate rheumatic pain, neural pain, sciatica, vertebral pain, ... and can be repeatedly used alternately for hot and for cold. Hot/Cold Pack