Soft quilted lining offers ultimate protections and flexibility for both 13" and 15" MacBooks. Soft padded fabric lines interior iPad pocket and custom molded waffle design back padding for sleek look, extra durability and ultimate comfort. Metal self-locking twist buckle for quick one-handed closer while on the go. Custom molded waffle design back padding for sleek look, extra durability and ultimate comfort. Commercial grade five bar seat belt webbing shoulder strap and has water resistant coated canvas for added durability