Heartbeat 18 oz Steel Bottle Marine Biology & Oceanology recording data on the array

recording data on the array of microscopic life in today's pond water sample

A selection of them are sketched in leafy green on this softcover notebook

Pour yourself a coffee and even if you don't get around to drinking it for hours

crabs and shells often found in our shallow seas

Show off your mathematical prowess with this deep blue and gold shoulder tote that celebrates some of the great equations that changed the world

Heartbeat 18 oz Steel Bottle Marine Biology & Oceanology recording data on the arrayStudy your cardiac rhythms while keeping hydrated! Nicer looking than an EKG pocket guide, this Heartbeat Flask is both functional and aesthetic. Fill it with ice cold water and take it to the gym for your cardio workout, or top it off with coffee for a long night shift in the cardiac ward. With a textured design for a unique tactile experience, this flask will keep your drink hot or cold until you're ready to enjoy it.