Gift it to your biology partner or wear it whenever you want to remind people to protect the hundreds of thousands of species that call the ocean home

or notebook

Its super lay-flat design is just the upgrade your research deserves

or you can flip it around and wear it with the printed modern physics design on the outside

Stainless Steel Straw Lid Volume_12 oz | 350 mL Gift it to your biologyIf you're the type to enjoy sipping your drink without removing the whole lid, we've got you covered. These leakproof straw lids flip up so you can sip on the go. These lids fit all of our stainless steel bottles (12 oz, 18 oz and 32 oz). Cut the straw using our guide to fit into 12 and 18 oz bottles. The silicone ring ensures your drink doesn't leak out, and the outside threading is BPA free plastic that glides onto the bottle smoothly and quietly.