"Material:Silicone+TPU+Velvet cloth Apply to:Board shoes, sports shoes, casual shoes, etc. MORE ADVANTAGES: INSTANT SHOE LIFTS with 3 height choices, 0.6” / 1” /1.4”, suitable for leather shoes, dress shoes, boots, sneakers, casual shoes, low-top, mid-top, high -top shoes, not for the high-heels. INVISIBLE HEIGHT INCREASE 1.5CM / 2.5CM / 3.5CM, nobody notice your secret shoes, easily lift your leg length, boost your confidence in the life. High quality material for long lasting, washable and reusable, keep you snug and comfortable all day long. Breathable top velvet for moisture wicking, odor control, keep the feet fresh and dry all day long. The GEL HEEL CUSHION PADS, provide the maximum comfort and shock absorption, relieve tiredness on the foot. Aligns your feet, and correct your body posture, reduce the risk of back and knee related problems. Invisible self-adhesive design prevents it from constantly slipping off. Hand wash with warm water by soap, and dry in the cool air. The self-adhesive surface will be recover its sticky. Package includes: 3 pairs of silicone insoles WARMLY TIPS: 1.It is necessary to make sure there is enough room to insert the heel insole. 2.We suggest the height creasing insoles are just put in the flat casual shoes, avoid the heighten shoes to prevent accidental foot sprains. 3.The shoe lifts inserts are suitable for adults, not suitable for adolescents.