"Used over memorial weekend as a go bag. Fit three days of clothes, makeup bag, toiletries and a couple extra things. It is a bit smaller than a standard backpack but with all the pockets and wide mouth it’s more compact size but utility. Reinforced if you are wanting as a laptop bag It will be very well protected no question. Goes On like a backpack and clips together in front of your upper chest. Just fine Probably for a bike, honestly didn’t try putting my arms out or head back to confirm. Bottom line, won’t disappoint."