These are freshwater pearl bracelets and can be order with the charms shown or no charm. The leather comes in black or brown. The leather bracelets are on a sliding knot and so one size fits most wrists 5"-6". For 4" wrist order small, for 7"-8" wrist order large. The leather is natural with no dyes or formaldhyde. What ever is good for your skin is good for the leather. However some perfumes, sun screens and pool water will dry it out so rinse with soapy water after. Do not try to move the knots when wet.