I have Camelback plastic one I love, and they make stainless now. It has a flip top sippy straw you have to bite to get flowing which prevents spills, and it has a loop for a carabiner. I love the one I got that has a narrower base so it fits in my cup holder. I love their bite system, and have it for my backpacking packs as well as a smaller one for when I'm doing outside work, and just for my daily water drinking because of the spill factor on my desk or in a bag.
The stainless ones are smaller than 40oz though, but I love the design on the drinking mechanism, so I'm biased. You could get him the back pack or shirt to wear so he can have it on while gaming
Hybrid Mode
