Abstract: A customisable insert (12) consisting of an integrated insole (14) and midsole (16) customised to match the internal profile of an item of footwear in which it will be used. Preferably, the item of footwear consists solely of an outsole (18) and an upper (20). A further aspect of the invention relates to a method of customising foot support for footwear including the steps of: identifying a foot type of at least one foot of a person; and prescribing a foot support insert type for an item of footwear, the insert type corresponding to the identified foot type. The prescribed insert type comprises an integrated insole (14) and midsole (16) customised to match the internal profile of the item of footwear.