Yes, the Clear Gloss Laser (CL) material is waterproof and has a permanent adhesive that works well on most surfaces. The OL177 is a full sheet with no cuts on the front or back and is ideal for use with electronic cutting machines. If you'd like to test the material on the hydro flask containers, you're welcome to visit the link below to request a few sheets at no cost: https://www.onlinelabels.com/samples