A gravity infusion IV bag having an elastic suspension arrangement with one or more suspension elements attached at a top end of the bag section and arranged to be hung from a support such that, as fluid flows from the outlet, the weight of the bag section reduces and the elastic suspension arrangement contracts to raise the bag section relative to the support. The one or more suspension elements may be formed from styrene-ethylene-butadiene-styrene (SEBS) and have a 100% Young's modulus in the range 80-120 psi.
