Sensa Small Bubble TubeSensa Small Bubble Tube Create a Soothing Sensory Experience Perfect for both calming environments and interactive spaces, the Sensa Small Bubble Tube encourages visual tracking, focus, and relaxation while providing a mesmerising display of colour and motion. Key Features: Colour changing LED lights with 7 different colour settings. Gentle bubbles create a soothing and calming atmosphere. Floating fish and balls add movement and visual interest.