Not just another reusable water bottle, this one has a 12-ounce cup hitching a ride inside—and that’s not even the coolest part. Once you fill up at your local coffee shop, you can stack the cup on top of the bottle and lock it into place so that you have only one thing to carry instead of two. Both pieces are made of double-walled stainless steel that keeps cold drinks cold for up to 12 hours and hot drinks hot for 6. 

• Stainless steel, 50A food grade silicone
• Bottle: 9.89" x 3.13"; 532 mL capacity
• Cup: 5.43" x 2.87"; 354 mL capacity