I have already reviewed other versions of this product, but wanted to leave a positive comment for this specific length as well, because, so far, I've had nothing but good no-nonsense products from this brand - I'm slowly becoming a fan.
I bought the 45 cm flat patch only "in case" of, by any circumstance, having two pedals that far apart on the board - I learned not too long ago that introducing too much cable between your guitar and your amp harms your tone - so I only bought one unit. Amazingly, this was precisely the length I needed for a specific connection and it turned out to be a very fortunate purchase. It is a slick and competent low-profile cable which, in spite of its length, does not dirsupt the tone.
Given that they never really demonstrated any clear negative aspects, everytime I review a Rockboard cable I suggest sizes that fit my very specific needs, almost treating it as a con - which speaks a lot about the unassailable quality of these cables. Given that this one fitted perfectly in my pedalboard - not 1cm less, not 1 more -, I can only say this one is perfect. Obviously recommended.