Fab video. Definitely wear a crotch strap, you're right Stephen Wake, if you tested your lifejacket both with and without you would never not wear one. It's a bit of a shock if you don't realise how important the crotch straps are.
The last life jacket has a hole or the air is escaping through a valve or something as you can see the CO2 puff out on inflation... Hopefully you noticed :)
Yep that's one of ours, thanks beefchips44, thanks for the tweet.
Truely spectacular footage. Glad they are wearing lifejackets!!