an apparatus and method for warming intravenous equipment is disclosed . the apparatus includes at least one warming device comprised of insulated wrap material having at least one removable and reusable heat pack supported along an inner insulated surface of the wrap material . the apparatus releasably encloses intravenous equipment such as i . v . bags and / or i . v . tubing . two such warming devices can be attached together in series so that one warming device warms the i . v . bag while the other warms a substantial length of i . v . tubing . a flexible insulated strip of material is detachably connected to the wrap material and is used to insulate portions of the i . v . infusion equipment which must be easily accessible and which are neither required nor intended to be heated . the apparatus has particular use for warming intravenous equipment used in routine or emergency pre - hospital situations , especially in cold environments .