The product is manufactured with TPU materials， simple construction and durable， suitable for a wide range of outdoor sports， a full range of compliance with U.S. FDA standards and meet the standards of EN-71 non-toxic substances and heavy metals                                    Features            Tube connected to the bottom of the bladderCan be put into backpack and backpack’s shoulder strapCan be used to store water with -20 to 50degree celsiusFoldable design                                                            Specifications            Content    3.0 Litre    <br>Bag    Approx. 50.5x17.8x3cm/19.88x7.01x1.18inch    <br>Tube diameter    Approx. 1cm    <br>Tube length    Approx. 1M    <br>Colors    Green+Black    <br>Weight    291g    <br>                                                            Package Includes            1 xEH 3.0L Anti-microbial Green Oblong Water Bag1x Tube1x Manual