The slim shape and leak protection make them a handy and practical companion. The collection made from high-quality stainless steel 18/8 is vacuum insulated and keeps drinks hot or cold for many hours. As is also the case with the classic SIGG aluminium bottles, trendy design, eco-awareness, functionality and Swiss quality standards enjoy top priority. H&C 0.75 L & 1 L do not have a tea filter. This bottle will keep your drink 24 hours hot and 30 hours cold.