Abstract: A safety carrier for stabilizing a pressure-fluid bottle in an upright position in a pickup box in a truck has a carrier frame operatively anchored to the truck's frame and a rigid ring connected to the frame in an articulated manner. The ring is on a swivel mount at an end of a pivoting arm. The arm is attached to the frame. The ring may be selectively changed by a user, without disconnecting from the frame, between an operative configuration and a stowage configuration. In the operative configuration, the ring is generally horizontal and projects out over the pickup box's floor to receive and fit closely about the pressure fluid bottle. An adjustable strap attached at one end to the ring includes a hook at an opposite end for securing a flange on the bottle. In the stowage configuration, the ring is rotated to a generally vertical position and the arm is pivoted to swing the ring flush against a wall of the pickup box. The carrier frame is anchored to a lip on the pickup box wall by a clamping portion.