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Some reusable cups are simply better than others. Take BKR’s: It’s made of durable, double-walled borosilicate glass that keeps cold drinks cold and hot drinks hot, and, thanks to the grippy silicone sleeve, it never sweats or gets hot to the touch. The sleek, 16-ounce silhouette fits comfortably in your hand and slides easily into most cup holders. Oh, and did we mention it comes with three fun-to-sip-from silicone straws?