Ortlieb X-tremer 59L

"The X-tremer 59L from Ortlieb is the ideal companion for anyone who doesn't want to compromise when cycling. With a volume of 59 liters, this unisex backpack offers enough space for the equipment you need for longer tours. Thanks to the IP 64 protection class, the contents are optimally protected against dust and splash water, making it particularly suitable for outdoor adventures."
"The pack sack is equipped with contoured straps that ensure optimum carrying comfort, even when the rucksack is fully loaded. The practical roll closure allows flexible adjustment of the height, whereby the specified dimensions apply when closed. Additional safety and stability during transportation are provided by D-rings and a bottom loop, which allow easy lashing, locking or even abseiling."
"Whether on the daily commute to work or on demanding bike tours, the X-tremer 59L is ready for any challenge. The well thought-out design and high-quality materials make it a reliable partner in any situation"