The CELEBRATE pack brings the beach party vibe with ocean blue and coral hues. K'lani hair bracelets can be used as a bracelet or hair band. Medium is the size of a normal hair tie band. It will fit wrists between 6-6.5" around. Small is better for young girls and small teens. It fits wrists that are 5-6" around. Large is for wrists over 6.5" around.