The All-Day StrawSip™ Tumbler is the perfect way to stay hydrated all day long. This product includes one 40oz Carbon Stainless Steel Tumbler and a StrawSip™ Lid that supports a Cirkul Sip® flavor cartridge to add refreshing flavors to your water (Sip® not included). Handheld hydration has never looked like this - whether you’re a leftie or a rightie, you can sip stress-free with this tumbler thanks to the 2-position lid. At Cirkul, our mission is to make drinking water delicious, convenient, and fun