An upper for an article of footwear, comprising: an upper shell defining an interior chamber, wherein the upper shell includes a plantar support surface and sidewalls (110L, 110M) extending upward from an outer perimeter of the plantar support surface; a bootie component received in the interior chamber, wherein the bootie component is fixedly engaged with the upper shell at fixed connections that consist essentially of: (a) one or more fixed bottom connections between the bootie component and the plantar support surface, wherein the one or more fixed bottom connections is spaced inward from the outer perimeter of the plantar support surface, and (b) one or more fixed top connections between the bootie component and a top forefoot area of the upper shell, wherein each of the one or more fixed top connections is located within a fixed region having: (i) a width dimension of less than 5 cm in a medial side-to-lateral side direction of the upper and a length dimension of less than 2 cm in a heel-to-toe direction of the upper and/or (ii) a fixed area of less than 10 cm 2, wherein the bootie component includes an interior compartment configured to completely contain a wearer's foot; and an interior midsole received in the interior compartment of the bootie component, wherein the interior midsole includes a top surface and is made from a polymer foam material. an upper shell defining an interior chamber, wherein the upper shell includes a plantar support surface and sidewalls (110L, 110M) extending upward from an outer perimeter of the plantar support surface; a bootie component received in the interior chamber, wherein the bootie component is fixedly engaged with the upper shell at fixed connections that consist essentially of: (a) one or more fixed bottom connections between the bootie component and the plantar support surface, wherein the one or more fixed bottom connections is spaced inward from the outer perimeter of the plantar support surface, and (b) one or more fixed top connections between the bootie component and a top forefoot area of the upper shell, wherein each of the one or more fixed top connections is located within a fixed region having: (i) a width dimension of less than 5 cm in a medial side-to-lateral side direction of the upper and a length dimension of less than 2 cm in a heel-to-toe direction of the upper and/or (ii) a fixed area of less than 10 cm 2, (a) one or more fixed bottom connections between the bootie component and the plantar support surface, wherein the one or more fixed bottom connections is spaced inward from the outer perimeter of the plantar support surface, and (b) one or more fixed top connections between the bootie component and a top forefoot area of the upper shell, wherein each of the one or more fixed top connections is located within a fixed region having: (i) a width dimension of less than 5 cm in a medial side-to-lateral side direction of the upper and a length dimension of less than 2 cm in a heel-to-toe direction of the upper and/or (ii) a fixed area of less than 10 cm 2, wherein the bootie component includes an interior compartment configured to completely contain a wearer's foot; and an interior midsole received in the interior compartment of the bootie component, wherein the interior midsole includes a top surface and is made from a polymer foam material.