I feel these are essential to any bottle now. Can't live without! Makes setting them down much quieter, perfect for a mom getting ready before her kid is awake. And while The top portion of my bottles are sporting a few dents from inevitable drops and falls the bottom is like new. Couldn't be happier

This is a great accessory for a Hydro Flask. Adds grip, protection and quiets the rattling around in a cup holder.

Great protection and nonslip grip for your flask.

I had purchased 2 of these, one for me and one for a friend. I was thinking it would be great as a tea cup in the backcountry, but it's too flimsy for that. It's better used as a bottle protector. I personally do not see why one of these would be needed to keep the bottle from sliding around as all the hydroflasks I have ever seen already have slip proof material on the bottom. I'll keep mine and find a good use for it, (maybe as a jar opener?) but it wasn't really what I was hoping for.

Nalgene or hydra flask goes everywhere I go. Mine are getting pretty beat up--especially around the base. The bumper will cover the existing damage and protect from future abuse. And prevents sliding around too. Winner.

I got this for my Hydroflask since I have a lot of friends that find their hydroflask bottles dented pretty easily around the bottom. This helps mitigate a lot of those dents. Plus it gives you a nice grip when holding it or when you place it on a smooth surface so it doesn't slide off or get punched off by a careless hand. If you like the colors then it's a fun and functional way to customize your bottle.

Have these on the 12oz hydroflask sip bottles for kids. Put one on a 12oz camelbak eddy vacuum insulated bottle. Also have one on my 20oz contigo chill bottle. These have prevented damage to the expensive bottles when the infant has dropped his bottle from high chair and kitchen counter height.

Love how I can personalize my bottles too.