Made of High Quality Aluminum Alloy . X-Large Size : 3.9x6.3in but ultra durable and lightweight. Very Strong Hooks will last forever. Secure your diaper bags, backpacks, purses, shopping bags, or anything you need to carry. Ideal for carrying diaper or shopping bags, baby accessories, grocery bags, and transporting bags. Fits to all major brands of joggers, buggies and prams making them the ..