I purchased the 37oz. bottle in teal. The color is accurate to the picture, and the bottle is very nice and sturdy. I like the strainer for retaining the ice when drinking. It would be great for hiking if you have a backpack to put it in. I'm 5' 6" with an average-sized hand, but it's a stretch for me to grip the bottle with one hand. This larger size might be easier to hold if it had some rubber or silicone around the middle. As far as keeping my drink cold, it's great---20 hours at 77 degrees and it's still cold, only the 6 ice cubes inside had melted.