The Bunion-Aider is designed to help relieve pain associated with a bunion, which occurs when the bones in the big toe shift out of alignment: the tip of the 1st metatarsal bone angles outward while the base of the proximal phalanx angels inward, thus creating the bunion 'bump'. The Bunion-Aider splint is not designed to help with hallux limitus pain, as that arises from limited range of motion.