For Season Two of Tikós, we have partnered with Beneath the Waves, a non-profit organization conducting a long-term study in the Bahamas Shark Sanctuary. Each bracelet supports the purchase of acoustic receivers used in the study while taking inspiration from this protected place and its inhabitants. Each cuff is made of 100% recycled ocean plastic & arrives in recycled packaging. Small fits wrists under 7.5 inches and Large fits wrists over 7.5 inches. Both are adjustable and guaranteed to fit or we will replace it.portation.Thank you for helping Cape Clasp #makewaves for marine life causes! transportation.Thank you for helping Cape Clasp #makewaves for marine life causes!