SHOOT Metal Aluminium Alloy Protective Frame Housing Case Cover Cage Shell with 37mm UV Lens Filter for GoPro HERO 3 3+ Accessories (Black) Net Weight : about 100g,Aluminium alloy CNC injection molded Prevents camera crash caused by overheating 1/4 inch screw hole, compatible with any tripod Can mount UV lens, filter lens, polarizing lensof diameter 37 mm The camera case have the GOPRO HERO 3+ LOGO on it,Aluminium alloy CNC injection molded