Preferably something waterproof and pretty large volume. Something I can cycle with. I had a Timbuk2 and found the quality wasn't the best. Samsonite VizAir isn't great to cycle with and the quality wasn't as good as I hoped but they did replace it after nearly 3 years with a brand new one. Any recommendations? I have a 15" retina and 12.9" iPad Pro, I do bring both sometimes. I would carry shoes, clothes, too.