The All-Day StrawSip Tumbler is the perfect way to stay hydrated all day long. This product includes one 40oz Pearl 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.