BJ Plattewrote a review of Blackburn Local Seat Bag on April 4, 2018
Familiarity: I've put it through the wringer
Overall I have been very satisfied with the bag, but just as others have said there needs to be slightly more Velcro on the strips that attach the bag to your saddle. It makes it difficult to get the bag tight to your seat while having enough Velcro overlap so that you are not scared of losing it. I also had the strap that attaches the bag to the seatpost tear off during a ride the other day. So maybe not the best bag to use on a mountain bike.