JugLug - Handle for Hydro Flask Type Bottles (Yellow) Fits 18oz Wide Mouth, 40oz and 64oz Hydro Flask bottles and other bottles/flasks with the same diameter mouth JugLug, LLC is not affiliated with Hydro Flask or any other flask/bottle manufacturer. JugLug products are intended for use with multiple bottle manufacturers. All trademarks remain the property of their respective owners. Use of trademarks does not imply any affiliation or endorsement of JugLug, LLC by Hydro Flask or any other trademark holders, nor does it imply that these trademark holders endorse JugLug LLC's products. JugLug, LLC does not endorse the use of any other product.