Bought this tunnel as a first try at agility for my dog. Wanted something with a large opening (most of the tunnels are 45cm diameter, this is 60cm) so it was a good introduction for him. However the length is huge (I'd hoped to be able to start off with 1m, 2m, 3m increments to introduce him into going through it but it is a pop-up design and isn't able to stay in shorter lengths).
The material is thin, but that is a pleasant surprise and not something I had thought of when looking into tunnels, it doesn't cut out all the light and seem like a black hole, so the dog is happier to go through it. Keep those claws short though.
The pegs are next to useless and I don't use them, my dog doesn't go through fast enough to move it, but the wind does tend to blow it around! The cover is nice and makes storage easy once folded flat.
Overall it is very good value for money, good dimensions, nice and long and lovely and wide for large dogs. The price means it isn't the highest quality tunnel you can buy, but I am happy to compromise as it is larger than many I have seen for more money. Happy to recommend it!