This tactile and great to handle spray of Jumbo UV effect strands has many knobbly parts inbuilt which provide tactile stimulation and sensory calmness through touch and light. The Fibre Optic UV Jumbo Bamboo set has strong bright colours which are enhanced in ultra violet light making this a stunning effect to add to any sensory room. The Fibre Optic UV Jumbo Bamboo Set is an ideal calming and relaxing resource.