Owala 32 oz FreeSip Stainless Steel Water Bottle

This is my right-hand arm man, my everything, my confidant, my best friend, my silly rabbit. Never spills in my bag, easy to drink while laying down, easy to open with boxing gloves on. I own this in at least three sizes and four colors and I have to stop myself from buying more.

Pro tip: replace the plastic straw inside with aluminum ones from Amazon and buy a bottle boot so you're not clonkin' every time you set it down.