The wheels with shock proof function are safe for adults to use. Also, the push handles and the foot rest is adjustable to fit your baby and babysitter.Material: Steel, 300D Oxford fabric. Overall dimension: 56 x 127 x 95-110cm (L x W x H). Folded size:56 x 35 x 110cm(L x W x H). Maximum user weight : 15 kg each seat. Age: 0 - 36 months. 1 x Double baby's stroller.