Rucksack

The Union 34 Stripe Rucksack with seatpost mount option looks like a really good idea on paper: pop it on your bike for going to the station (for example), park bike, pop rucksack on your back, away you go.

The alternatives are a normal backpack and getting off your bike with a sweaty back, or lugging a pannier when you're off the bike. Combining the best of both worlds could be a winner, but the Stripe doesn't quite deliver.

I need a new rucksack for my 15 mile commute. I carry a laptop and clothes but leave shoes at work. I am not fussed about a specific laptop compartment and my main 2 requirements are comfort and as little sweat on my back as possible.
Any recommendations out there?

Thanks

Pro Viz has certainly tweaked quality control as well as the technology when it comes to their Hi Viz rucksack and tri-viz reflective triangle. Starting with the bag, this retains the rip stop nylon/Codura mix of its forbears but seems a more durable blend and those padded straps have been grazing on steroids. Speaking of which, there are 10 and 30 litre capacities in either day glow yellow or softer-spoken black/Scotchlite.

Named for the winner of the Tour de France and an Olympic gold medal prior to his staggering 2012 achievements, this British designed and made (by Carradice of Nelson) rucksack is a bag our Brad could be proud to use.

Big brother to the 25 we reviewed some time ago, the dhb Slice 30-litre rucksack is for those who need a bit more space without compromising comfort or a bike's responsiveness. Kitchen sink commuters will be delighted to know it takes a 15inch laptop, change of clothes, shoes, stout lock(s), A4 folder and pretty much any bike/rider essentials you'd need for the concrete jungle or a weekend's trail blazing.

The lightest backpack we've ever used, the Outlier Minimal is surprisingly effective as a barebones commuting gear carrier, but for a pack with almost no features, it's a bit pricy.

Designed to be a do-it-all backpack for commuters and leisure cyclists, the Roadsign bag from Howies isn't intended as an all-singing, all-dancing technical rucksack. It looks good and it serves a purpose, while adhering to Howies cool image at the same time.