Attching this bag to the vertical of a gooseneck stem was problematic. The bottom of the bag doesn't have a velcro strap nor a loop to place one that would secure its' desire to wander off the top tube. I wound up spreading the wings of a Nitto botle holder that lives on the downtube. It is otherwise A+ execution but for my needs one star off.

This bag is well made, versatile, and I can use it almost anywhere besides by Randonneur Bag. I have currently put it on my recumbent bicycle on the steering tube, but have used it on the back of my VO Randonneur Bag for a catchall bag for easy access. The velcro attachments are very strong and this sack will probably never fall off of anything I have it attached to. I am never disappointed with anything I purchase at VeloOrange. That is why I am a continuing customer. Thanks!

I've had this mounted to the rear of a randonneur bag and on my bars/stem. With velcro combo on the inside of the loops it mounts super solid and stays where you mounted. The foam structure and material choice means it crushes and changes shape if needed yet has a solid structure to one handed guide a water bottle in or out and easily find keys or snacks. Great for smoother roads yet if used on rough trails you will want to snug it in place with the closure loop.