I have used this just once so far , choosing to use it over my tarpaulin when taking so waste cardboard to the recycle point , because it was raining. The bag is very easy to install on the base and is very secure once fitted. I was very impressed with the quality and feel it was great value for money. It has inbuilt cross straps in the lid section that clip to corresponding receivers on the base of the bag making it's contents firm and secure secure. I will and do feel very happy trusting anything I may wish to carry in this bag, a great addition to my Easybase unit.