WEARING SHOES WITHOUT PAIN: ZUCNANA ball-of-foot cushions are made by soft gel and breathable fabric. No matter you work, dance, or go shopping in heels, these metatarsal pads provide great cushioning and shock absorption, and help relieve foot pain ANTI-FRICTION DESIGN: Our heel grips are made by soft and breathable sponge which provides great cushioning and softness, reduce friction between heels and shoes, and prevent the heel skin from blisters or any other injuries HARMLESS ADHESIVE BACKING: Our metatarsal pads and heel pads both have sticky back to fix to your shoes and stay all day long. Simply peel off the adhesive tape from the pads, and stick them to the front and back of the shoes ONE SIZE FITS ALL: Our shoe inserts fit all foot sizes, and are suitable for all kinds of shoes. Please be aware that our heel cushions Do occupy a little of room in your shoes, and make sure there is enough space for your shoes WALKING WITH BIG SMILE: With our comfortable ball of foot cushions, there is nothing like the confident smile you have as wearing your favorite brand heels and attending your important events.