Hydro Flask 40oz Carrier, HamFire Neoprene Sleeve Pouch for Hydro Flask 40 oz Wide Mouth Sport Water Bottle Fit for Hydro Flask 40oz water bottles. Protect your expensive Hydro Flask from dents and scratches. Great for outdoor and indoor activities. Easy to use with the zipper, allowing you to slide your growler into the pouch and zipped closed for a snug and secure fit. Make your Hydro Flask safe with this stylish carrier that appeals to everyone.