The tool keg performed great for me on a mucky graveltrail ride recently, kept everything dry, out of the way, and easy to access to help a friend in need of a quick repair. Finished a gravel ride today and the tool keg was gone at the end of the ride. Disappointment. It was securely attached but dislodged on a very bumpy descent. Takeaway is that this products is ideal for smoother surfaces and not the rough and tumble. 3 stars because I like the concept as long as it's the right terrain. Would have been 5 stars yesterday.