CYCLING WEEKLY8 OUT OF 10
The outpost is bigger than your average seatpack - in fact it holds 11 litres. It's held in place by two velcro straps on the seatpost and a clip-fastened strap that attaches by looping over the saddle rails. There are two parts: the outer nylon casing and a removable drysack. Blackburn suggests a maximum weight of 4.5kg and does not recommend the Outpost for use with carbon seatposts. This is a great way to carry enough for an overnight trip without needing to modify your bike.