TALON Grips travel mugs and water bottles are great for keeping your drinks cold or hot. They are double vacuum seal insulated and keep drinks the desired temp.
I have been using talon grips since the first weapon I ever bought. The grip was slippery and the answer was buying Talon Grips. They support your grip every time with 100% reliability. I have many guns and they all have Talon Grips on them.