Abstract: The present invention describes means for maintaining position of a slidable object on an elongated object such as a flexible tube. The slidable means is provided through paired, generally flattened flexible tension-strips. Likewise, the fixation means is provided through the gripping action of the paired flexible tension-strips. Immediate and most pertinent use relates to a warmed pouch with slidable attachment to the tube member of a stethoscope. When the tube portion of a stethoscope is inserted and threaded through the lips of the pouch the flexible strips provide friction and grasping. Thus position of the pouch on the tube is maintained in stable fashion until external pressure is applied to the pouch at or near the bilateral ends of the strips.