WK IEASON New Water Bottle Handle Shoulder Strap Carrier Holder for Stanley Tumbler 30-40OZ Hydro Flask Wide Mouth 12oz-64oz

Fits several sizes. I keep one in the car and one at home. I'm considering ordering more because this product is so useful.

My husband loves the different ways he can use to carry his water bottle while walking or doing different activities throughout the day.

Not sure if it works or not as I did get the plastic ring to attach the strap.

Opening is way too small and will not stretch to go on to cup.