So far I've been really impressed with the Telesin. The box it comes in is very sturdy and I've used it to keep my gopro dome safe since.
It's easy to clean the dome after use as well as long as you keep the go pro case closed and don't allow any water inside the dome itself.
I've used it a number of times now and no sign of leakages. I'm really happy with it.

This mask is nicely made, very easy to attach-straps not pulling your hair, mask feel natural and comfortable when it's on. Mainly you don't have to worry about holding tube in your mouth - you can freely breath through your mouth and nose and even talk! View is very clear and doesn't get steamy or foggy when breathing.

I bought this gopro case at the same time as an adapter pack. This box fits the essentials only, which is all you will need most of the time. If you want to carry all your adapters, I would recommend buying something larger.

This gopro underwater snorkelling mask is brilliant creation - goggles and snorkelling tube all in one! I Hated to have them separate and it's always used to be hassle putting it on!
Mask also came with mesh carrying bag and complimentary waterproof bag to keep your phone and small goods safe! I am Very very happy with it!

Arrived fast and protected well in its packaging.
The dome is fairly sized and made very well, it is very sturdy and made to last.
Came with an added handle and a useful wrist strap, both extras are very useful.

The mask has a nice soft rubber seal around it which presses on your face and prevents water creeping in. Easy to use with great all round vision, a flexible headband, and there is also a very handy mount for a Go-Pro camera.

Very fog-resistant, natural breathing without having anything in your mouth, and excellent visibility. it has a ball in where you breathe so that water wont get inside the holes. It is also collapsible which is a great feature for transporting.

Perfect product from perfect seller.

Very good~~

The product arrived on time, as described by manufacturer, it was shipped without issue, arrived within prescribed estimates, the packaging was undamaged, and the product itself was made with quality materials. It's amazing!