Imported Silicone Gripping Feet--This product adopts imported silicone gripping feet, which is environmentally friendly and wearresistant, and does not damage the paint surface of the violin Three Dimensional Fit Design--According to the threedimensional fit design of the edge of the violin, the size is standard, firmly grasp, fit the body, the overall line is smooth, refer to the mellow beauty of the violin, come with good coordination, full beauty, and the elastic design can effectively correct the movement posture Thermoplastic Elastomer Material--Adopt thermoplastic elastomer material, possess high strength and elasticity, light and convenient, easy to carry and use. Easy to store in any violin case Cultivate Correct Bowing--Self bowing practice guide and help you cultivate correct bowing and wrist action. Encourages straight bowing, which is the best helper for beginners. Great confidence builder for the student violinist or for the seasoned player who wants to improve their bowing action Suitable Uses--This violin bow straightness corrector is suitable for 4/4, 3/4, 1/2 violins. Plays an important role in correcting and improving violin playing skills