The SIGG aluminium water bottle is designed for durability and portability. Constructed from a single piece of high-grade aluminium, the bottle features an interior coating that is resistant to fruit acids, is taste-neutral, and free from BPA and phthalates. The design includes a screw leak-proof and pull cap system. Compatible with standard bottle cages. This listing includes a compatible protective insulator sleeve designed to provide additional thermal regulation and impact resistance.