The groves in this BPA Free 25oz. Nautilus water bottle makes this Sports Bottle a stand out item. Secured to its flip-open lid is a clip that attaches easily to backpacks & sports bags for easy carrying. The unique Nautilus makes a great giveaway item for birthday parties, Bar/Bat Mitzvahs, athletic events and corporate giveaways. It also makes a great eco-friendly fundraising tool for your school.