SIGG drinking bottles are manufactured from a single piece of high-quality aluminium. This light metal is considered to be almost indestructible. The interior coating is resistant to fruit acid, remains tasteless, and is free of harmful pollutants. Special round-edged thread for extra safety. Leak-proof design. Extra protection against odours and smells. Free of BPA, BPF, BPS, phthalates, PVC and polycarbonates, 6.9cm x 21.3cm.