[Product Content] You Will Receive 1 Chest Bag, Size 13*18*4Cm, Color Black; And 1 Carabiner. The Length Is 4.6Cm And The Color Is Black. [Product Material] The Chest Bag Is Made Of Waterproof And Tear-Resistant Polyester, Which Ensures That It Remains In Good Condition During Outdoor Activities, Is Strong And Durable, And Is Not Easily Deformed. [Multifunctional Design] The Backpack Has A Simple And Stylish Design With Multiple Internal Compartments For Convenient Storage Of Mobile Phones, Wallets, Keys And Other Personal Items. It Can Also Be Used With A Carabiner To Attach Water Bottles, Keys, Etc. To Increase Convenience During Outdoor Activities. [Comfortable And Portable] This Chest Bag Is Lightweight And Close-Fitting, Comfortable To Wear Without Extra Burden. The Adjustable Shoulder Strap Design Makes It Suitable For People Of Different Body Shapes And Easy To Carry. [Applicable Scenarios] It Is Very Suitable For Use In Various Outdoor Activities Such As Sports, Traveling, Hiking And Cycling. Keeps Items Safe In All Weather Conditions, Making It Ideal For Outdoor Enthusiasts.