A sole structure (12, 112) for an article of footwear (14, 114), the sole structure (12, 112) comprising: a bladder (110, 510) defining a fluid-filled peripheral chamber and a fluid-filled heel chamber; wherein the peripheral chamber is configured as an elongated tube, the peripheral chamber having a heel portion establishing a rear periphery of the bladder (110, 510), a lateral arm portion extending from the heel portion and establishing a lateral periphery of the bladder (110, 510), and a medial arm portion extending from the heel portion and establishing a medial periphery of the bladder (110, 510); wherein the bladder (110, 510) includes webbing connecting the heel chamber to the peripheral chamber, with the heel chamber disposed between the medial arm portion and the lateral arm portion and forward of the peripheral chamber in a heel region of the bladder (110, 510); wherein the peripheral chamber and the heel chamber are sealed and are fluidly isolated from one another; wherein the bladder (110, 510) defines at least two additional fluid-filled chambers fluidly isolated from the peripheral chamber, the at least two additional fluid-filled chambers including a rear midfoot chamber and a front midfoot chamber, the rear midfoot chamber disposed between and connected to the heel chamber and the front midfoot chamber by the webbing, and the rear midfoot chamber and the front midfoot chamber connected to the lateral arm portion and the medial arm portion by the webbing; and wherein the bladder (110, 510) includes a groove (G1, G2) in the webbing, the groove (G1, G2) extending between the medial arm portion and the front midfoot chamber, between the medial arm portion and the rear midfoot chamber, between a rear of the rear midfoot chamber and the heel chamber, between the rear midfoot chamber and the lateral arm portion, and between the front midfoot chamber and the lateral arm portion. a bladder (110, 510) defining a fluid-filled peripheral chamber and a fluid-filled heel chamber; wherein the peripheral chamber is configured as an elongated tube, the peripheral chamber having a heel portion establishing a rear periphery of the bladder (110, 510), a lateral arm portion extending from the heel portion and establishing a lateral periphery of the bladder (110, 510), and a medial arm portion extending from the heel portion and establishing a medial periphery of the bladder (110, 510); wherein the bladder (110, 510) includes webbing connecting the heel chamber to the peripheral chamber, with the heel chamber disposed between the medial arm portion and the lateral arm portion and forward of the peripheral chamber in a heel region of the bladder (110, 510); wherein the peripheral chamber and the heel chamber are sealed and are fluidly isolated from one another; wherein the bladder (110, 510) defines at least two additional fluid-filled chambers fluidly isolated from the peripheral chamber, the at least two additional fluid-filled chambers including a rear midfoot chamber and a front midfoot chamber, the rear midfoot chamber disposed between and connected to the heel chamber and the front midfoot chamber by the webbing, and the rear midfoot chamber and the front midfoot chamber connected to the lateral arm portion and the medial arm portion by the webbing; and wherein the bladder (110, 510) includes a groove (G1, G2) in the webbing, the groove (G1, G2) extending between the medial arm portion and the front midfoot chamber, between the medial arm portion and the rear midfoot chamber, between a rear of the rear midfoot chamber and the heel chamber, between the rear midfoot chamber and the lateral arm portion, and between the front midfoot chamber and the lateral arm portion.