PULUZ 6 in 1Surfing Fixed Braces Connecting Mount Set for GoPro HERO5 Session/5/4/3+/3/2/1(Black) Brand new and high quality. Necklace is made of elastic material to be stretchable. Braces connecting part is non-toxic silicone and is safe to use. Braces apply width: 5~8cm/1.97~3.15inches; Max.Load: 500g/17.64ounces. Can be used for surfing, kayaking, standup paddleboarding, and other water sports.