Learning Resources Sensory Trio Fidget Tubes. Each sensory tube engages a different sense through fun hands-on play. Listen to falling beads as they tumble down the tube, watch the swirl of glitter to spot the hidden smiley faces, or feel the weight of falling sand as it cascades from one end to the other. The sensory fun doesnt stop there. Two of the tubes have textured end caps, and one has a fun twist and click feature. Sized for little hands, these sensory tubes are ready for fidget fun at home or on the go. Tubes measure 13cm H. 3 Piece Set (Ages 3+)