Chest Strap Chest Belt Prevents Backpack Slippage Shoulder Backpack Backpack Belt Shoulder Strap Fixation Adult Child Applicable Black; HP0003; 【Product Details】Belt Length: Approximately 28cm to approximately 63cm; Belt Width: Approximately 2.5cm 【Durable Material】Made of nylon material with anti-slip buttons for secure fixation. Convenient and easy-to-use D-ring hook included. The D-ring hook is perfect for outdoor activities and travel. When you put things you want to use quickly, like sunglasses or a camera, in your backpack, it can be a hassle to take them out, right? If you hang them on the D-ring hook, you can quickly use them when the cloudy sky suddenly clears, or when you're faced with a breathtaking view that makes you want to shout. Backpacks can hold a lot of luggage, so you tend to pack them full, right? Have you ever felt, "Oh, it's surprisingly heavy..." when you put it on? This chest strap allows you to attach the backpack snugly to your body, so you can carry it as if it's part of you! 【Balance Stability】Using this product provides good balance stability and alleviates shoulder and lower back fatigue. Makes carrying a heavy backpack easier! 【No Discomfort】Strong fixation prevents slippage during movement. Can be used for children's backpacks, commuter backpacks, mountaineering backpacks, etc. The cause of back fatigue isn't just the weight.