In Thunderball, Bond wears a short black boot with his suits. It might be more appropriate to call it a tall shoe as it hardly reaches the ankle. It has no laces but it has elastic under the instep to help get it on and off. The literary Bond “abhorred laces”, so this shoe is quite appropriate for the character. It’s more formal than the casual loafers/moccasins that the literary Bond wore and more acceptable for a suit.
This boot is made from three pieces of leather, the two quarters and the vamp. The two quarters are held together over the instep with a strip of elastic. The shoes is essentially a taller version of the Alfred Sargent Burlington pictured below. The shorter Burlington is very similar in style to the shoes Bond wears in You Only Live Twice.
This boot is not the same one that Sean Connery wears in Goldfinger. The boot in Goldfinger (pictured below) is more like a short Chelsea boot with a elastic gusset on the sides and can be seen with the dark brown striped suit in the Fort Knox scene.