The CJing Jaw Exerciser Set includes resistance bands in 4 different levels to help shape and strengthen the jawline for both men and women. Made of silicone material, this set is designed for home use and can be used indoors or outdoors. The brand, CJing, specializes in fitness equipment and gear, with a focus on gym and training activities. Made in China, this resistance trainer is perfect for those looking to improve their jaw muscle strength and definition.