STM Goods Ace Always On Cargo Carrying Case for 30.5 cm (12') Chromebook - Black - Impact Resistance, Shock Absorbing, Water Resistant, Wear Resistant, Abrasion Resistant - Polyurethane, Polycarbonate, Thermoplastic Polyurethane (TPU), Thermoplastic Rubber (TPR), 600D Polyester, Fabric, 1680D Ballistic Nylon Body - Textured - Shoulder Strap