Feature: 1. Practice the strength of the mouth and fix the shape of the mouth. Use both ends and pull one end to exercise lip biting force and lip muscle strength concentration. One is to hold the pencil for 10-20 seconds at a time. Exercise the endurance of lip muscles. 2. The eloquence practice of trombone, horn and Saxophone also applies. 3. Use this exercise to warm up for a few minutes before playing the trumpet and play in good condition. 4. According to the principles of horn mouth and forward breathing, lip concentration and mouth closure, the horn mouth exerciser avoids pulling out the corners of lips and lips, practices gums, tooth closure, tooth alignment and lip parallelism, and vigorously practices to correct mouth shape and breathing. 5. Applicable for trumpet, trombone, clarinet, horn and Saxophone are also applicable. Specification: Name: Trumpet mouth strength exerciser Material: stainless steel Color: Silver Size: 65 * 20 * 10mm/2.56*0.79*0.39in Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you Please allow 1-2cm measuring deviation due to manual measurement. Included: 1 x Trumpet Mouth Strength Trainer