yeah does anyone know how its supposed to work. when i had my ortlieb velocity i could not figure it out. also after what feels like owning every type of bike bag out there and then selling most of them through the forums i have finally settled on the reload midpack, which is great-feels like wearing a pillow and the weight disappears plus i think it looks cool. but i have to say the best bag i have owned so far was the timbuc2 messenger back pack. super comfortable, super stable, looked small but held a lot and has an awesome refelctor on the back. it just wasn't very waterproof and for some reason i prefer the feel of cordura. i'm keeping it though. i would never use a messenger bag on a regular basis after switching over to well designed back packs.