. Comfortable curved, soft foam eliminates neck pain while playing. Rubber feet protect the violin surface from scratches. As a longtime favorite of students and professionals, this violin rib provides a sturdy and comfortable frame. Intensive filling, comfort and stability. Durable and adjustable. Thanks to it, your shoulders will not be tired or painful during training. Specifications:Material: PlasticColor: BlackSize:For 4-4 violins, the size is for 3/4 4/4 universal violins; For the size of 1-2 violins applicable to 1/2 violin; For size 1-4 violins applicable to 1/4 1/8 1/10 1/16 universal violins; Package List: 1 x Violin RibNote: Be sure to verify the size before ordering. Please refer to the measurement. A small measurement error is acceptable within the normal range. There may be a slight color difference due to monitor, camera or other factors, please refer to the physical item.