Material: PolyesterSize: Width 2cm/0.78in, Adjustable range: 20-30cm/7.87-11.81inColor: As shown in the figureProduct features:1. As we all know , the different computers display colors differently, the color of the actual item may vary slightly from the following images.2. If you feel difficult to choose the size, you can contact us at any time. We will give you some suggestions, but for your reference only.1. Versatile Design: This backpack anti-slip buckle strap has multiple uses, making it the perfect companion for outdoor activities and travel. It can be used with various types of backpacks such as shoulder bags, school bags, etc., and can also be DIYed into a children's backpack accessory, with extreme flexibility in use. 2. Excellent Comfort Performance: Breathable material and ergonomic design make this strap very comfortable to wear, even after long periods of use, you won't feel tired or experience adverse reactions such as skin allergies. Multiple fixing points also make the backpack stable and reliable, allowing you to experience nature with peace of mind. 3. High-Quality Nylon Material: Made of nylon material, it ensures its waterproof, tear-resistant, and wear-resistant performance. The exquisite craftsmanship also ensures that every rope and buckle is very sturdy and will not be damaged or loosened. 4. Simple and Easy Operation: This strap is simple and easy to operate, even when you are very busy, you can quickly adjust it to the state you need, making it more convenient to use. Suitable for use in the wilderness or compact space, it also allows you to complete tasks more efficiently. Package includes:1 pc Backpack anti-slip buckle