I bought on the recommendation of several friends these bags, because I was tired always take a backpack while cycling. The bag is easy to attach and still secure the rack and can, thanks to variable mounting can be set to almost any rack. The capacity of the bag is perfectly adequate for everyday use and even a larger shopping is good space in the bags. Even in the rain the contents of the bag is well protected as long as they are not too busy packing, because 2-3 times the cover should be already wrapped so that it is rainproof. All in all a purchase, I have not looked back since, and a product that I recommend them without hesitation.