This chill pack is made into the shape of an IV transfusion blood bag, measures 4" x 2.75" and is filled with soothing gel that provides cool relief. Do not freeze, this is refrigerator-friendly only. It's perfect as a promotion for hospitals, doctor's offices, or health fairs. Add your company name or logo for maximum visibility. This product is not intended for use by children or pets. It may present a choking hazard to children under 3 years of age.