OUMILY Multifunctional Beer Cap for GoPro Hero 4/1/2/3 Camera - Black + Transparent
There is a tube on each side a middle tube is connected with each other. To insert the left and right tubes into the beverage can and drinking you can also mix two kinds of drinks. Professional GOPRO camera permanent joint of the cap is suitable for installing GOPRO camera when outdoor riding. Head Circumference 56~60cm Containing the maximum size of beer can: 6.8 cm