This Waterproof Monopod For GoPro is actually an imitation of the Vicdozia Monopod For GoPro.
The pole of the monopod is made of plastic, whereas the original Vicdozia is made of aluminum.
I got it for S$7.80 on Lazada during their 12/12 year end sales.
The grip of the pole is made of soft rubber, and hence, it is non-slip. It also comes with a wrist strap to secure your monopod to your wrist.
It feels cheap in terms of price and design, but the pole is sturdy. I would say it is still value for money.
The monopod weighs 133g and measures 18cm in length with extension to 48cm.
You can lock to the desired length of your monopod by twisting it. When it is locked in place, the line of the extension pole of the monopod will not be aligned.
To unlock it, twist it back again, and this time the line of the extension pole of the monopod will be aligned.