Abstract: A sleeve for efficiently emptying the contents of a flexible tube filled with viscous material. The sleeve is generally arrowhead shaped having manual gripping structures on the opposite sides thereof and facing internal lands which engage the exterior surfaces of the tube. When slid toward the nozzle of the tube, the sleeve forces the contents of the tube out the open nozzle. The manual gripping structures can be depressed grip regions which correspond to the internal lands, serrations, and/or upstanding finger engaging abutment surfaces. In some embodiments the edges holding the opposite sides together are flexible so that pressure thereon tends to spread the internal lands and pressure on the grips tends to move the internal lands closer together.