Heartbeat 12 oz Steel Bottle Pencil Bag or give one to your

or give one to your favorite pilot or aeronautical engineer

or sketch your favorite natural history museum finds

please let us know and we will be sure your order includes different and unique notebooks

Use it to keep your dive log

take your notes to the next level with the Equilateral

Heartbeat 12 oz Steel Bottle Pencil Bag or give one to yourStudy your cardiac rhythms while keeping hydrated! It looks nicer than an EKG pocket guide, and this Heartbeat Flask is 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.