Premium soft memory foam material, which can provide a comfortable wearing experience while not easily deformed. These comfortable inner soles help reduce pressure on feet and knees. Also useful for those who often stand or walk a lot. Feel walking on the cloud.Avoid stinky feet, breathable enough to keep your feet dry and fresh. Moulds to the foot in response to heat and pressure, this air-cooled memory foam insoles help to reduce the presence of substance which causes odours, your feet stay fresh all the time with this odours eater odour erase eliminator memory foam insoles. Outer Material: Synthetic Full length and lightweight design cushion inserts, suitable for many types of footwear, including running trainers, walking shoes, hiking boots, work shoes and etc. Size: 38, 39, Please choose usual size or size down, base on your feet fat or slim and shoes space. We recommend that you replace your insoles with regular use. Check to see if your insoles are providing the support and cushioning you're looking for. If not, it's time to replace them