Features: brand new and high quality Made of safe materials, non-toxic, tasteless, durable and wear-resistant. Therapy Tool that teaches tongue-tip lateralization, elevation and depression. Easy to clean, it can be cleaned with warm water or wiped with alcohol. It is suitable for people who need tongue training such as orthodontic period and healthy swallowing. Helps to promote the correct pronunciation of the "l" sound, suitable for children and adults of all ages. Specifications: Material: PP+Metal "I" Type Training Device Size: Approx. 146x11mm/5.75x0.43inch "for T" Shape Training Device Size: Approx. 126x31mm/4.96x1.22inch "C" Type Training Device Size: Approx. 146x20mm/5.75x0.79inch Package Includes: 1 Set Speech Therapy Talk Tool(3 Pcs) note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.