Our Aloha set includes five bracelets that double as hair ties in vibrant tropical colors that enhance the silver Hawaiian islands charm. Wearing this bracelet stack will remind you to breathe in, breathe out and carry the spirit of Aloha. Medium is the size of a normal hair tie band. It fits wrists between 5-6.4" around. Small is better for younger girls and small teens. It fits wrists under 5" around. Large is sized for wrists 6.5-7.5" Please allow 5-8 business days for shipping.