relieve sore and aching feet in minutes while improving strength and appearance. Keep your feet healthy by improving and preventing foot problems. for traveling using at home and work. Stretch cramped toes. Revitalize tired feet. Heel sets (increased pad)Material: senior silicone material + SEBE polymer materials1 rest assured increased fear of taking off your shoes to avoid embarrassment;2 the unique design of the bionic inside and outside the curve fit the heel;3 invisible higher no trace to protect privacy;4 fit fixed in the soles of the feet will not be prominent;5 ultra-thin skin-friendly high elasticity breathable not easy to deformation;6 shock absorption compression anti-dry crack effectively protect the heel;