A kit comprising a pair of items of footwear that are balancing training aids, wherein each item of footwear comprises: a) a brace that is not provided by a ski boot, but is part of a balancing training aid itself and is arranged to be releasably secured to at least part of a wearer's leg and/or foot; b) a platform that is operably connected to the brace; and c) securing means for releasably securing a balancing member, or a stack of balancing members, underneath the platform; wherein the kit includes a plurality of balancing members for each item of footwear so that one balancing member can be replaced with another balancing member that has a smaller ground-contacting area, or so that it can have another balancing member with a smaller ground-contacting area stacked underneath it; and wherein the brace is arranged to secure at least part of a wearer's leg and/or foot during balancing training so as to help train the wearer in adopting or trying to adopt a desired position for balancing and the securing means releasably secures the balancing member, or a stack of balancing members, underneath the platform at a suitable location for such training; the brace substantially restricting lateral movement of the wearer's foot relative to the platform and being characterised in that the brace comprises at least one substantially rigid member (1002, 1003) that can be maintained at a substantially fixed position and/or angle relative to the platform whilst the wearer is balancing or attempting to balance using the item of footwear. a) a brace that is not provided by a ski boot, but is part of a balancing training aid itself and is arranged to be releasably secured to at least part of a wearer's leg and/or foot; b) a platform that is operably connected to the brace; and c) securing means for releasably securing a balancing member, or a stack of balancing members, underneath the platform; wherein the kit includes a plurality of balancing members for each item of footwear so that one balancing member can be replaced with another balancing member that has a smaller ground-contacting area, or so that it can have another balancing member with a smaller ground-contacting area stacked underneath it; and wherein the brace is arranged to secure at least part of a wearer's leg and/or foot during balancing training so as to help train the wearer in adopting or trying to adopt a desired position for balancing and the securing means releasably secures the balancing member, or a stack of balancing members, underneath the platform at a suitable location for such training; the brace substantially restricting lateral movement of the wearer's foot relative to the platform and being characterised in that the brace comprises at least one substantially rigid member (1002, 1003) that can be maintained at a substantially fixed position and/or angle relative to the platform whilst the wearer is balancing or attempting to balance using the item of footwear. wherein the kit includes a plurality of balancing members for each item of footwear so that one balancing member can be replaced with another balancing member that has a smaller ground-contacting area, or so that it can have another balancing member with a smaller ground-contacting area stacked underneath it; and wherein the brace is arranged to secure at least part of a wearer's leg and/or foot during balancing training so as to help train the wearer in adopting or trying to adopt a desired position for balancing and the securing means releasably secures the balancing member, or a stack of balancing members, underneath the platform at a suitable location for such training; the brace substantially restricting lateral movement of the wearer's foot relative to the platform and being characterised in that the brace comprises at least one substantially rigid member (1002, 1003) that can be maintained at a substantially fixed position and/or angle relative to the platform whilst the wearer is balancing or attempting to balance using the item of footwear.