GAS BOTTLE LOCKING DEVICE

Sometimes the most useful products are simple, but creative, concepts.

The CO2 inflation bottles for lifejackets have an alarming tendency to unscrew, rendering the automatic inflation system useless. Crewsaver’s EXOLOCK is a locking device designed to hold them in place through increasing friction. It’s simple, inexpensive, can be retrofitted to existing lifejackets with either UML or Halkey Roberts firing heads, and is now a standard fit for all Crewsaver’s auto inflation models.

Price: £5. crewsaver.com