Our Protect set includes 5 bracelets that double as hair ties bringing all the ocean feels with blues, teal, and sandy neutrals. The gold charm shows a whale tale reminding everyone to protect the beautiful creatures of the sea. A portion of proceeds from this pack will be donated to the WILDCOAST conservation projects. 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.