The Superfeet Green Trim-To-Fit Insole is the 1977 original that still offers affordable, orthotic support for a wide range of shoes. Bringing a high-profile insole alongside the widest & deepest heel cup for ultimate support. So if you're hiking, running or just strolling, this insole will help to make you more comfortable & secure. Features High profile insole Ideal for wide variety shoes & boots Professional-grade orthotic support Wide & deep heel cup for maximum support Gives excellent performance & comfort Specifications As with all new products, a break in period may be required. We advise you wear the products for 1-2 hours on your first day & build this by 1-2 hours until you are completely comfortable with the products. For some people this may take a week or two. It is not uncommon to feel the Superfeet products towards the back of the arch, in front of the heel. This is just the unique Superfeet shape doing its job. Please be aware of the 60 day money back guarantee if you are not completely happy with the products.