"PHITEN RAKUWA NECKLACE EXTREME MIRROR BALL LIGHT ●Lightweight with aluminum material used for the top spherical part! Excellent durability has been achieved through special processing. ●Strong support for sports performance. ●Attractive bright colors that are easy to wear even for women. ●Easy to put on and take off with magnetic clasp. Material Side fabric/polyester/nylon, core/elastomer, fastener/aluminum/magnet/stainless steel Technology Metax"