Fortunately, the instructions aren’t lengthy because the functionality of the device itself is actually very limited. Instead, the One is reliant on smartphone integration to function. Intended primarily to meet the needs of touring cyclists, and looks aside, the Trimm One’s key selling points are smartphone integration and a 15-hour claimed battery life – that can theoretically be made unlimited through the use of ‘smart battery management’ and a couple of optional accessories. We’ll now set the low limit of the front derailleur, which stops the chain from shifting off the smallest chainring.

Trimm says it has put a lot of effort into the navigation functionality, saying it wanted the One to be as good as Google Maps is for cars, but for bikes. Shift your front derailleur to the smallest ring and your rear derailleur into a cog near the middle of the cassette. SRAM supplies a tool that you can line up with the derailleur pulley wheel and the cassette cog to help you achieve the correct adjustment. As well as being cheaper, GPS devices from established brands such as Garmin and Wahoo have considerably larger feature sets than the Trimm One. Simon Bromley / Immediate MediaWith its anodised aluminium frame and curved Gorilla Glass display, it’s a slimmer and more modernist design than we’re used to with cycling-specific GPS computers. The app is much more intuitive to use than the device itself and everything from adjusting settings, data fields and connecting to external devices (such as the speed sensor, or heart rate monitors and power meters ) is fast and straightforward. Manually guide the chain into the largest cog and adjust the limit screw. Kaden Gardener / Our Media For example, even with a smartphone paired the One doesn’t have features such as different activity profiles, workouts, data recording options, smart trainer control, Strava Live segments, or integration with apps such as Komoot. If the solar panel could also charge your phone, perhaps then it would make sense. As it is though, all that extra battery life feels wasted because you’re essentially just pegged to the battery life of your smartphone instead.

Playframes and Play Towers work around a square or a rectangle shape, allowing children to work around, rather than along the equipment. These play frames are a lot larger than the Tri-Play which allows for full sized Trim Trail elements to be used in a smaller space rather than in the traditional ‘strip’ way. Children’s Play Frames are great if you are wanting to replace a traditional climbing frame with a Trim Trails for Schools but only have a limited footprint to work with. The complete reliance on smartphone integration seems like an odd choice, given it’s aimed at touring cyclists who may not be able to regularly charge their smartphones. The feature set of both the One and the Trimm Cycling app are also limited compared to the (cheaper) competition.I’m not a fan of the included out-front mount, though. My first impressions of it were that it looks and feels a little cheap, especially compared to the device itself.