This stainless steel water bottle is designed with a small bottle mouth and made of food grade stainless steel which ensures safety and sanitation. Screw-on cap has a good sealing property for better insulation effect. Width of 2.9 inch makes this portable sports water bottle suitable for putting in car cup holder and clamping on bike frame. Besides, this lightweight single wall water bottle can be widely used when you are working, on the road or in a vacation. We are capable to provide custom water bottles with special shapes for our customers according to their requirements.