Sigg Deutschland GmbH SIGG Hot Cold ONE Brushed 0.5 L SIGG HOT COLD ONE is a stylish and practical addition to the existing SIGG HOT COLD collection. It can be operated practically with one hand and has the proven double-walled insulation of our SIGG HOT COLD bottles made of stainless steel. Thanks to the lock button, which keeps the clasp securely closed, it can easily be stowed in the bag without any worries.