Review on LEZYNE Caddy QR Rail Mount Bike Saddle Bag - Compact, Water Resistant, Bicycle Seat Bag by Tony Addis

I have several velcro versions and have been using them on various bikes for over 5 years. But I prefer to strap bikes to the saddle as tightly as possible, preferably just enough so that the back of my leg doesn't touch or rub while cycling. After finding these versions of the QR rail mount, I replaced all the others. it's so much easier now. Get the velcro version if you move the bag enough to other bikes, otherwise just take this one.