GEARVGEARV 2-Pack Bar Cup Holder for Stroller, Bike and Wheelchair; Universal Cup Holders for UTV/ATV, Car, Scooter, Boat; Drink Holder Accessories with Net Pocket and Cord Lock (Pink)

This comes with a set of two. Velcro straps so its super easy to wrap around and install on any object, we put them on our bikes and actually move them around often, they easily hold water bottles though I wouldn't recommend putting any open containers in them as they slide around and are pretty flimsy, however for holding water bottles, locking them in, and staying gripped tightly to wherever you latch them on to, they work great.

Purchased one for an inside walker and one for an outside walker for elderly person. Makes it very convenient for their water bottles.

If you have a custom chair. These fit great on either side of my feet, I put all kinds of things in them and get other wheelie buddies inquiring about them

Wasn't sure if they'd really hold on to the leg of my swing camp chair, but they do. Don't slide down, even with a full, heavy water bottle. The net pocket isn't big enough to hold anything when there's a water bottle in it, but I got two, so just have one on each side.

Love it!! Holds my drinks tightly and really well