ALUMINIUM The high-quality, recyclable aluminum drinking bottle is extremely easy to transport and is equally suited to both school and leisure activities. The material is free from harmful chemicals, such as estrogen-mimicking substances and phthalates – for safer drinking enjoyment. The spill-proof child cap also ensures easy transport, even when extra time gets more action-packed. Whether at school or while playing, with the practical KBT Monster Friends drinking bottle from SIGG, little monster fans are always well equipped for even the wildest tour. The original from Switzerland with the child-friendly kids bottle top is made of high-quality aluminum in one piece, making it light and stable. The leak-proof cap stays tight, even with carbonated drinks. The material is free from harmful substances such as estrogen-active substances, BPA and phthalates.