A funny math water bottle makes a great teacher appreciation gift. This funny math teacher gift is sure to be a hit during teacher appreciation week or for a math lover. This white aluminum water bottle holds 20 ounces of hot or cold liquid, and includes a carabiner clip screw-top for your convenience. This aluminum water bottle is a perfect travel size bottle for taking to sporting events, enjoying outdoor activities, or keeping hydrated at the office. The convenient size makes this portable water bottle a perfect water bottle for women, water bottle for men, or kids water bottle. In addition to bottled water, this lightweight water bottle is perfect for holding ice cubes. The imprinted design will display on both sides of the water bottle as pictured. The premium full color sublimation imprint creates a vibrant, long lasting, and lead-free design. Handwashing is recommended.