Abstract: A suspender for a fluid reservoir having a drinking tube includes a grip structurally coupled to a hanger. The grip is oriented to hold the drinking tube and the hanger configured to support a weight of the reservoir. The reservoir includes flexible walls forming a compartment for holding a liquid. An expander for the reservoir includes a body insertable inside the compartment through an opening defined by a collar of a fill port. Formed on the body are a first collar engaging surface and a second collar engaging surface. The collar engaging surface are separated by a distance substantially equal to a width of the opening. An expansion member, integral to the body, is oriented to maintain at least a partial separation between the flexible walls when the body is inserted inside the compartment and the first and second collar engaging surfaces are engaging the collar.

Abstract: A suspender for a fluid reservoir having a drinking tube includes a grip structurally coupled to a hanger. The grip is oriented to hold the drinking tube and the hanger configured to support a weight of the reservoir. The reservoir includes flexible walls forming a compartment for holding a liquid. An expander for the reservoir includes a body insertable inside the compartment through an opening defined by a collar of a fill port. Formed on the body are a first collar engaging surface and a second collar engaging surface. The collar engaging surface are separated by a distance substantially equal to a width of the opening. An expansion member, integral to the body, is oriented to maintain at least a partial separation between the flexible walls when the body is inserted inside the compartment and the first and second collar engaging surfaces are engaging the collar.