Material: TPU Thickness: 3.2mm Available Volume: 1.5L. 2.0L. 2.5L. 3.0L Transparent food grade TPU material Durable against tearing Standard tube length: 100cm With blue silicone mouthpiece and valve All parts of the bladder meet with Chinese GB and American FDA or NSF food grade standard Non-toxic, free from taste, as certificated by SGS laboratories Certified as being compliant with the European EN71 standard