1Stimulate breast development, promote blood circulation, improve metabolism, prevent chest prolapse, remove supernumerary breast. 2630nm band red light penetrates the bottom of the breast, accelerates the metabolism of breast gland tissue, improves breast swelling and pain. 3Strengthen chest muscle movement, stimulate the pituitary gland to secrete, permeate lymphatic fluid unceasingly, make breast sponge body increase. 4Simple operation and humanized design, easy to operate, healthy silicone material, soft and closefitting, comfortable wearing experience. 5TPU transparent chest strap, environmental protection material, free hands, prevent falling off.